diff --git a/Gir_Gst.toml b/Gir_Gst.toml
index 964f042cb..a97e91d28 100644
--- a/Gir_Gst.toml
+++ b/Gir_Gst.toml
@@ -1424,10 +1424,34 @@ status = "generate"
     # Don't auto-implement traits
     name = ""
 
+    [[object.function]]
+    name = "new"
+        [object.function.return]
+        nullable = true
+        nullable_return_is_error = "Can't create DateTime"
+
+    [[object.function]]
+    name = "new_y"
+        [object.function.return]
+        nullable = true
+        nullable_return_is_error = "Can't create DateTime"
+
+    [[object.function]]
+    name = "new_ym"
+        [object.function.return]
+        nullable = true
+        nullable_return_is_error = "Can't create DateTime"
+
+    [[object.function]]
+    name = "new_ymd"
+        [object.function.return]
+        nullable = true
+        nullable_return_is_error = "Can't create DateTime"
+
     [[object.function]]
     name = "new_from_g_date_time"
         [object.function.return]
-        nullable = false
+        nullable_return_is_error = "Can't create DateTime from glib::DateTime"
 
     [[object.function]]
     name = "to_g_date_time"
diff --git a/gstreamer/src/auto/date_time.rs b/gstreamer/src/auto/date_time.rs
index f35904e31..2dd351b87 100644
--- a/gstreamer/src/auto/date_time.rs
+++ b/gstreamer/src/auto/date_time.rs
@@ -27,21 +27,23 @@ impl DateTime {
         hour: i32,
         minute: i32,
         seconds: f64,
-    ) -> DateTime {
+    ) -> Result<DateTime, glib::BoolError> {
         assert_initialized_main_thread!();
         unsafe {
-            from_glib_full(gst_sys::gst_date_time_new(
+            Option::<_>::from_glib_full(gst_sys::gst_date_time_new(
                 tzoffset, year, month, day, hour, minute, seconds,
             ))
+            .ok_or_else(|| glib_bool_error!("Can't create DateTime"))
         }
     }
 
-    pub fn new_from_g_date_time(dt: &glib::DateTime) -> DateTime {
+    pub fn new_from_g_date_time(dt: &glib::DateTime) -> Result<DateTime, glib::BoolError> {
         assert_initialized_main_thread!();
         unsafe {
-            from_glib_full(gst_sys::gst_date_time_new_from_g_date_time(
+            Option::<_>::from_glib_full(gst_sys::gst_date_time_new_from_g_date_time(
                 dt.to_glib_full(),
             ))
+            .ok_or_else(|| glib_bool_error!("Can't create DateTime from glib::DateTime"))
         }
     }
 
@@ -91,19 +93,28 @@ impl DateTime {
         unsafe { from_glib_full(gst_sys::gst_date_time_new_now_utc()) }
     }
 
-    pub fn new_y(year: i32) -> DateTime {
+    pub fn new_y(year: i32) -> Result<DateTime, glib::BoolError> {
         assert_initialized_main_thread!();
-        unsafe { from_glib_full(gst_sys::gst_date_time_new_y(year)) }
+        unsafe {
+            Option::<_>::from_glib_full(gst_sys::gst_date_time_new_y(year))
+                .ok_or_else(|| glib_bool_error!("Can't create DateTime"))
+        }
     }
 
-    pub fn new_ym(year: i32, month: i32) -> DateTime {
+    pub fn new_ym(year: i32, month: i32) -> Result<DateTime, glib::BoolError> {
         assert_initialized_main_thread!();
-        unsafe { from_glib_full(gst_sys::gst_date_time_new_ym(year, month)) }
+        unsafe {
+            Option::<_>::from_glib_full(gst_sys::gst_date_time_new_ym(year, month))
+                .ok_or_else(|| glib_bool_error!("Can't create DateTime"))
+        }
     }
 
-    pub fn new_ymd(year: i32, month: i32, day: i32) -> DateTime {
+    pub fn new_ymd(year: i32, month: i32, day: i32) -> Result<DateTime, glib::BoolError> {
         assert_initialized_main_thread!();
-        unsafe { from_glib_full(gst_sys::gst_date_time_new_ymd(year, month, day)) }
+        unsafe {
+            Option::<_>::from_glib_full(gst_sys::gst_date_time_new_ymd(year, month, day))
+                .ok_or_else(|| glib_bool_error!("Can't create DateTime"))
+        }
     }
 
     pub fn get_day(&self) -> i32 {
diff --git a/gstreamer/src/date_time.rs b/gstreamer/src/date_time.rs
index 0e66d339c..5d502de11 100644
--- a/gstreamer/src/date_time.rs
+++ b/gstreamer/src/date_time.rs
@@ -26,11 +26,11 @@ impl DateTime {
         // however, the resulting instance can't be translated to `glib::DateTime`
         if self.has_second() {
             self.to_g_date_time()
-                .expect("DateTime::to_utc: to_g_date_time")
-                .to_utc()
-                .as_ref()
-                .ok_or_else(|| glib_bool_error!("Can't convert datetime to UTC"))
-                .map(DateTime::new_from_g_date_time)
+                .and_then(|d| {
+                    d.to_utc()
+                        .ok_or_else(|| glib_bool_error!("Can't convert datetime to UTC"))
+                })
+                .and_then(|d| DateTime::new_from_g_date_time(&d))
         } else {
             // It would be cheaper to build a `glib::DateTime` direcly, unfortunetaly
             // this would require using `glib::TimeZone::new_offset` which is feature-gated
@@ -45,18 +45,19 @@ impl DateTime {
                 self.get_minute(),
                 0f64,
             )
-            .to_g_date_time()
-            .expect("DateTime::to_utc: to_g_date_time")
-            .to_utc()
-            .ok_or_else(|| glib_bool_error!("Can't convert datetime to UTC"))
-            .map(|g_date_time_utc| {
+            .and_then(|d| d.to_g_date_time())
+            .and_then(|d| {
+                d.to_utc()
+                    .ok_or_else(|| glib_bool_error!("Can't convert datetime to UTC"))
+            })
+            .and_then(|d| {
                 DateTime::new(
                     0f32, // UTC TZ offset
-                    g_date_time_utc.get_year(),
-                    g_date_time_utc.get_month(),
-                    g_date_time_utc.get_day_of_month(),
-                    g_date_time_utc.get_hour(),
-                    g_date_time_utc.get_minute(),
+                    d.get_year(),
+                    d.get_month(),
+                    d.get_day_of_month(),
+                    d.get_hour(),
+                    d.get_minute(),
                     -1f64, // No second
                 )
             })
@@ -240,6 +241,7 @@ mod tests {
 
         // Hour offset
         let utc_date_time = DateTime::new(2f32, 2019, 8, 20, 20, 9, 42.123_456f64)
+            .unwrap()
             .to_utc()
             .unwrap();
         assert_eq!(utc_date_time.get_year(), 2019);
@@ -252,6 +254,7 @@ mod tests {
 
         // Year, month, day and hour offset
         let utc_date_time = DateTime::new(2f32, 2019, 1, 1, 0, 0, 42.123_456f64)
+            .unwrap()
             .to_utc()
             .unwrap();
         assert_eq!(utc_date_time.get_year(), 2018);
@@ -263,7 +266,7 @@ mod tests {
         assert_eq!(utc_date_time.get_microsecond(), 123_456);
 
         // Date without an hour (which implies no TZ)
-        let utc_date_time = DateTime::new_ymd(2019, 1, 1).to_utc().unwrap();
+        let utc_date_time = DateTime::new_ymd(2019, 1, 1).unwrap().to_utc().unwrap();
         assert_eq!(utc_date_time.get_year(), 2019);
         assert_eq!(utc_date_time.get_month(), 1);
         assert_eq!(utc_date_time.get_day(), 1);
@@ -272,6 +275,7 @@ mod tests {
 
         // Date without seconds
         let utc_date_time = DateTime::new(2f32, 2018, 5, 28, 16, 6, -1f64)
+            .unwrap()
             .to_utc()
             .unwrap();
         assert_eq!(utc_date_time.get_year(), 2018);
@@ -288,96 +292,102 @@ mod tests {
 
         // Different years
         assert!(
-            DateTime::new(2f32, 2020, 8, 20, 19, 43, 42.123_456f64)
-                > DateTime::new(2f32, 2019, 8, 20, 19, 43, 42.123_456f64)
+            DateTime::new(2f32, 2020, 8, 20, 19, 43, 42.123_456f64).unwrap()
+                > DateTime::new(2f32, 2019, 8, 20, 19, 43, 42.123_456f64).unwrap()
         );
 
         // Different months (order intentionally reversed)
         assert!(
-            DateTime::new(2f32, 2019, 8, 20, 19, 43, 42.123_456f64)
-                < DateTime::new(2f32, 2019, 9, 19, 19, 43, 42.123_456f64)
+            DateTime::new(2f32, 2019, 8, 20, 19, 43, 42.123_456f64).unwrap()
+                < DateTime::new(2f32, 2019, 9, 19, 19, 43, 42.123_456f64).unwrap()
         );
 
         // Different days
         assert!(
-            DateTime::new(2f32, 2019, 8, 21, 19, 43, 42.123_456f64)
-                > DateTime::new(2f32, 2019, 8, 20, 19, 43, 42.123_456f64)
+            DateTime::new(2f32, 2019, 8, 21, 19, 43, 42.123_456f64).unwrap()
+                > DateTime::new(2f32, 2019, 8, 20, 19, 43, 42.123_456f64).unwrap()
         );
 
         // Different hours
         assert!(
-            DateTime::new(2f32, 2019, 8, 20, 19, 44, 42.123_456f64)
-                > DateTime::new(2f32, 2019, 8, 20, 19, 43, 42.123_456f64)
+            DateTime::new(2f32, 2019, 8, 20, 19, 44, 42.123_456f64).unwrap()
+                > DateTime::new(2f32, 2019, 8, 20, 19, 43, 42.123_456f64).unwrap()
         );
 
         // Different minutes
         assert!(
-            DateTime::new(2f32, 2019, 8, 20, 19, 43, 44.123_456f64)
-                > DateTime::new(2f32, 2019, 8, 20, 19, 43, 42.123_456f64)
+            DateTime::new(2f32, 2019, 8, 20, 19, 43, 44.123_456f64).unwrap()
+                > DateTime::new(2f32, 2019, 8, 20, 19, 43, 42.123_456f64).unwrap()
         );
 
         // Different seconds
         assert!(
-            DateTime::new(2f32, 2019, 8, 20, 19, 43, 43.123_456f64)
-                > DateTime::new(2f32, 2019, 8, 20, 19, 43, 42.123_456f64)
+            DateTime::new(2f32, 2019, 8, 20, 19, 43, 43.123_456f64).unwrap()
+                > DateTime::new(2f32, 2019, 8, 20, 19, 43, 42.123_456f64).unwrap()
         );
 
         // Different micro-seconds
         assert!(
-            DateTime::new(2f32, 2019, 8, 20, 19, 43, 42.123_457f64)
-                > DateTime::new(2f32, 2019, 8, 20, 19, 43, 42.123_456f64)
+            DateTime::new(2f32, 2019, 8, 20, 19, 43, 42.123_457f64).unwrap()
+                > DateTime::new(2f32, 2019, 8, 20, 19, 43, 42.123_456f64).unwrap()
         );
 
         // Different TZ offsets
         assert!(
-            DateTime::new(1f32, 2019, 8, 20, 19, 43, 42.123_456f64)
-                > DateTime::new(2f32, 2019, 8, 20, 19, 43, 42.123_456f64)
+            DateTime::new(1f32, 2019, 8, 20, 19, 43, 42.123_456f64).unwrap()
+                > DateTime::new(2f32, 2019, 8, 20, 19, 43, 42.123_456f64).unwrap()
         );
 
         // TZ offset leading to year, month, day, hour offset
         assert!(
-            DateTime::new(2f32, 2019, 1, 1, 0, 0, 0f64)
-                < DateTime::new(1f32, 2018, 12, 31, 23, 59, 0f64)
+            DateTime::new(2f32, 2019, 1, 1, 0, 0, 0f64).unwrap()
+                < DateTime::new(1f32, 2018, 12, 31, 23, 59, 0f64).unwrap()
         );
 
         // Partially defined `DateTime`
-        assert!(DateTime::new_ymd(2020, 8, 20) > DateTime::new_ymd(2019, 8, 20));
-        assert!(DateTime::new_ymd(2019, 9, 20) > DateTime::new_ymd(2019, 8, 20));
-        assert!(DateTime::new_ymd(2019, 8, 21) > DateTime::new_ymd(2019, 8, 20));
+        assert!(DateTime::new_ymd(2020, 8, 20).unwrap() > DateTime::new_ymd(2019, 8, 20).unwrap());
+        assert!(DateTime::new_ymd(2019, 9, 20).unwrap() > DateTime::new_ymd(2019, 8, 20).unwrap());
+        assert!(DateTime::new_ymd(2019, 8, 21).unwrap() > DateTime::new_ymd(2019, 8, 20).unwrap());
 
-        assert!(DateTime::new_ym(2020, 8) > DateTime::new_ym(2019, 8));
-        assert!(DateTime::new_ym(2019, 9) > DateTime::new_ym(2019, 8));
-        assert!(DateTime::new_ym(2019, 9) > DateTime::new_ymd(2019, 8, 20));
+        assert!(DateTime::new_ym(2020, 8).unwrap() > DateTime::new_ym(2019, 8).unwrap());
+        assert!(DateTime::new_ym(2019, 9).unwrap() > DateTime::new_ym(2019, 8).unwrap());
+        assert!(DateTime::new_ym(2019, 9).unwrap() > DateTime::new_ymd(2019, 8, 20).unwrap());
 
-        assert!(DateTime::new_y(2020) > DateTime::new_y(2019));
-        assert!(DateTime::new_ym(2020, 1) > DateTime::new_y(2019));
+        assert!(DateTime::new_y(2020).unwrap() > DateTime::new_y(2019).unwrap());
+        assert!(DateTime::new_ym(2020, 1).unwrap() > DateTime::new_y(2019).unwrap());
 
         assert!(
-            DateTime::new(2f32, 2019, 8, 20, 19, 43, 44.123_456f64)
-                < DateTime::new_ymd(2020, 8, 20)
+            DateTime::new(2f32, 2019, 8, 20, 19, 43, 44.123_456f64).unwrap()
+                < DateTime::new_ymd(2020, 8, 20).unwrap()
         );
 
         assert!(
-            DateTime::new_ymd(2020, 8, 20)
-                > DateTime::new(2f32, 2019, 8, 20, 19, 43, 44.123_456f64)
+            DateTime::new_ymd(2020, 8, 20).unwrap()
+                > DateTime::new(2f32, 2019, 8, 20, 19, 43, 44.123_456f64).unwrap()
         );
 
         // Comparison occurs on the same TZ when the `DateTime` doesn't have time (note 2)
-        assert!(DateTime::new_ymd(2020, 1, 1) > DateTime::new(-2f32, 2019, 12, 31, 23, 59, 0f64));
+        assert!(
+            DateTime::new_ymd(2020, 1, 1).unwrap()
+                > DateTime::new(-2f32, 2019, 12, 31, 23, 59, 0f64).unwrap()
+        );
 
         // In the following cases, the partially defined `DateTime` is a range WRT
         // the fully defined `DateTime` and this range includes the fully defined `DateTime`,
         // but we can't tell if it's before or after and they are not equal (note 1)
         assert!(DateTime::new(2f32, 2019, 8, 20, 19, 43, 44.123_456f64)
-            .partial_cmp(&DateTime::new_ymd(2019, 8, 20))
+            .unwrap()
+            .partial_cmp(&DateTime::new_ymd(2019, 8, 20).unwrap())
             .is_none());
 
         assert!(DateTime::new_ymd(2019, 8, 20)
-            .partial_cmp(&DateTime::new(2f32, 2019, 8, 20, 19, 43, 44.123_456f64))
+            .unwrap()
+            .partial_cmp(&DateTime::new(2f32, 2019, 8, 20, 19, 43, 44.123_456f64).unwrap())
             .is_none());
 
         assert!(DateTime::new_ym(2019, 1)
-            .partial_cmp(&DateTime::new_y(2019))
+            .unwrap()
+            .partial_cmp(&DateTime::new_y(2019).unwrap())
             .is_none());
     }
 
@@ -386,41 +396,41 @@ mod tests {
         ::init().unwrap();
 
         assert_eq!(
-            DateTime::new(2f32, 2018, 5, 28, 16, 6, 42.123_456f64),
-            DateTime::new(2f32, 2018, 5, 28, 16, 6, 42.123_456f64)
+            DateTime::new(2f32, 2018, 5, 28, 16, 6, 42.123_456f64).unwrap(),
+            DateTime::new(2f32, 2018, 5, 28, 16, 6, 42.123_456f64).unwrap()
         );
 
         assert_eq!(
-            DateTime::new(2f32, 2018, 5, 28, 16, 6, 0f64),
-            DateTime::new(2f32, 2018, 5, 28, 16, 6, 0f64)
+            DateTime::new(2f32, 2018, 5, 28, 16, 6, 0f64).unwrap(),
+            DateTime::new(2f32, 2018, 5, 28, 16, 6, 0f64).unwrap()
         );
 
         assert_eq!(
-            DateTime::new(2f32, 2018, 5, 28, 16, 6, -1f64),
-            DateTime::new(2f32, 2018, 5, 28, 16, 6, -1f64)
+            DateTime::new(2f32, 2018, 5, 28, 16, 6, -1f64).unwrap(),
+            DateTime::new(2f32, 2018, 5, 28, 16, 6, -1f64).unwrap()
         );
 
         assert_eq!(
-            DateTime::new_ymd(2018, 5, 28),
-            DateTime::new_ymd(2018, 5, 28)
+            DateTime::new_ymd(2018, 5, 28).unwrap(),
+            DateTime::new_ymd(2018, 5, 28).unwrap()
         );
 
         // In the following cases, the partially defined `DateTime` is a range WRT
         // the fully defined `DateTime` and this range includes the fully defined `DateTime`,
         // but they are not equal (note 1)
         assert_ne!(
-            DateTime::new_ymd(2018, 5, 28),
-            DateTime::new(2f32, 2018, 5, 28, 16, 6, -1f64)
+            DateTime::new_ymd(2018, 5, 28).unwrap(),
+            DateTime::new(2f32, 2018, 5, 28, 16, 6, -1f64).unwrap()
         );
 
         assert_ne!(
-            DateTime::new(2f32, 2018, 5, 28, 16, 6, -1f64),
-            DateTime::new_ym(2018, 5)
+            DateTime::new(2f32, 2018, 5, 28, 16, 6, -1f64).unwrap(),
+            DateTime::new_ym(2018, 5).unwrap()
         );
 
         assert_ne!(
-            DateTime::new(2f32, 2018, 5, 28, 16, 6, -1f64),
-            DateTime::new_y(2018)
+            DateTime::new(2f32, 2018, 5, 28, 16, 6, -1f64).unwrap(),
+            DateTime::new_y(2018).unwrap()
         );
     }
 }
diff --git a/gstreamer/src/date_time_serde.rs b/gstreamer/src/date_time_serde.rs
index 690f01a8c..2f1ea2416 100644
--- a/gstreamer/src/date_time_serde.rs
+++ b/gstreamer/src/date_time_serde.rs
@@ -135,8 +135,10 @@ impl<'de> Deserialize<'de> for Date {
 }
 
 #[allow(clippy::many_single_char_names)]
-impl From<DateTimeVariants> for DateTime {
-    fn from(dt_variant: DateTimeVariants) -> Self {
+impl TryFrom<DateTimeVariants> for DateTime {
+    type Error = glib::BoolError;
+
+    fn try_from(dt_variant: DateTimeVariants) -> Result<Self, Self::Error> {
         match dt_variant {
             DateTimeVariants::Y(y) => DateTime::new_y(y),
             DateTimeVariants::YM(y, m) => DateTime::new_ym(y, m),
@@ -153,7 +155,8 @@ impl From<DateTimeVariants> for DateTime {
 
 impl<'de> Deserialize<'de> for DateTime {
     fn deserialize<D: Deserializer<'de>>(deserializer: D) -> Result<Self, D::Error> {
-        DateTimeVariants::deserialize(deserializer).map(|dt_variant| dt_variant.into())
+        DateTimeVariants::deserialize(deserializer)
+            .and_then(|dt_variant| dt_variant.try_into().map_err(D::Error::custom))
     }
 }
 
@@ -171,7 +174,7 @@ mod tests {
         let mut pretty_config = ron::ser::PrettyConfig::default();
         pretty_config.new_line = "".to_string();
 
-        let datetime = DateTime::new(2f32, 2018, 5, 28, 16, 6, 42.123_456f64);
+        let datetime = DateTime::new(2f32, 2018, 5, 28, 16, 6, 42.123_456f64).unwrap();
         let res = ron::ser::to_string_pretty(&datetime, pretty_config.clone());
         assert_eq!(
             Ok("YMDhmsTz(2018, 5, 28, 16, 6, 42.123456, 2)".to_owned()),
@@ -184,19 +187,19 @@ mod tests {
             res
         );
 
-        let datetime = DateTime::new(2f32, 2018, 5, 28, 16, 6, -1f64);
+        let datetime = DateTime::new(2f32, 2018, 5, 28, 16, 6, -1f64).unwrap();
         let res = ron::ser::to_string_pretty(&datetime, pretty_config.clone());
         assert_eq!(Ok("YMDhmTz(2018, 5, 28, 16, 6, 2)".to_owned()), res,);
 
-        let datetime = DateTime::new_ymd(2018, 5, 28);
+        let datetime = DateTime::new_ymd(2018, 5, 28).unwrap();
         let res = ron::ser::to_string_pretty(&datetime, pretty_config.clone());
         assert_eq!(Ok("YMD(2018, 5, 28)".to_owned()), res);
 
-        let datetime = DateTime::new_ym(2018, 5);
+        let datetime = DateTime::new_ym(2018, 5).unwrap();
         let res = ron::ser::to_string_pretty(&datetime, pretty_config.clone());
         assert_eq!(Ok("YM(2018, 5)".to_owned()), res);
 
-        let datetime = DateTime::new_y(2018);
+        let datetime = DateTime::new_y(2018).unwrap();
         let res = ron::ser::to_string_pretty(&datetime, pretty_config);
         assert_eq!(Ok("Y(2018)".to_owned()), res);
     }
@@ -209,58 +212,61 @@ mod tests {
         let datetime_de: DateTime = ron::de::from_str(datetime_ron).unwrap();
         assert_eq!(
             datetime_de,
-            DateTime::new(2f32, 2018, 5, 28, 16, 6, 42.123_456f64)
+            DateTime::new(2f32, 2018, 5, 28, 16, 6, 42.123_456f64).unwrap()
         );
 
         let datetime_json = r#"{"YMDhmsTz":[2018,5,28,16,6,42.123456,2.0]}"#;
         let datetime_de: DateTime = serde_json::from_str(datetime_json).unwrap();
         assert_eq!(
             datetime_de,
-            DateTime::new(2f32, 2018, 5, 28, 16, 6, 42.123_456f64)
+            DateTime::new(2f32, 2018, 5, 28, 16, 6, 42.123_456f64).unwrap()
         );
 
         let datetime_ron = "YMDhmTz(2018, 5, 28, 16, 6, 2)";
         let datetime_de: DateTime = ron::de::from_str(datetime_ron).unwrap();
-        assert_eq!(datetime_de, DateTime::new(2f32, 2018, 5, 28, 16, 6, -1f64));
+        assert_eq!(
+            datetime_de,
+            DateTime::new(2f32, 2018, 5, 28, 16, 6, -1f64).unwrap()
+        );
 
         let datetime_ron = "YMD(2018, 5, 28)";
         let datetime_de: DateTime = ron::de::from_str(datetime_ron).unwrap();
-        assert_eq!(datetime_de, DateTime::new_ymd(2018, 5, 28));
+        assert_eq!(datetime_de, DateTime::new_ymd(2018, 5, 28).unwrap());
 
         let datetime_ron = "YM(2018, 5)";
         let datetime_de: DateTime = ron::de::from_str(datetime_ron).unwrap();
-        assert_eq!(datetime_de, DateTime::new_ym(2018, 5));
+        assert_eq!(datetime_de, DateTime::new_ym(2018, 5).unwrap());
 
         let datetime_ron = "Y(2018)";
         let datetime_de: DateTime = ron::de::from_str(datetime_ron).unwrap();
-        assert_eq!(datetime_de, DateTime::new_y(2018));
+        assert_eq!(datetime_de, DateTime::new_y(2018).unwrap());
     }
 
     #[test]
     fn test_serde_roundtrip() {
         ::init().unwrap();
 
-        let datetime = DateTime::new(2f32, 2018, 5, 28, 16, 6, 42.123_456f64);
+        let datetime = DateTime::new(2f32, 2018, 5, 28, 16, 6, 42.123_456f64).unwrap();
         let datetime_ser = ron::ser::to_string(&datetime).unwrap();
         let datetime_de: DateTime = ron::de::from_str(datetime_ser.as_str()).unwrap();
         assert_eq!(datetime_de, datetime);
 
-        let datetime = DateTime::new(2f32, 2018, 5, 28, 16, 6, -1f64);
+        let datetime = DateTime::new(2f32, 2018, 5, 28, 16, 6, -1f64).unwrap();
         let datetime_ser = ron::ser::to_string(&datetime).unwrap();
         let datetime_de: DateTime = ron::de::from_str(datetime_ser.as_str()).unwrap();
         assert_eq!(datetime_de, datetime);
 
-        let datetime = DateTime::new_ymd(2018, 5, 28);
+        let datetime = DateTime::new_ymd(2018, 5, 28).unwrap();
         let datetime_ser = ron::ser::to_string(&datetime).unwrap();
         let datetime_de: DateTime = ron::de::from_str(datetime_ser.as_str()).unwrap();
         assert_eq!(datetime_de, datetime);
 
-        let datetime = DateTime::new_ym(2018, 5);
+        let datetime = DateTime::new_ym(2018, 5).unwrap();
         let datetime_ser = ron::ser::to_string(&datetime).unwrap();
         let datetime_de: DateTime = ron::de::from_str(datetime_ser.as_str()).unwrap();
         assert_eq!(datetime_de, datetime);
 
-        let datetime = DateTime::new_y(2018);
+        let datetime = DateTime::new_y(2018).unwrap();
         let datetime_ser = ron::ser::to_string(&datetime).unwrap();
         let datetime_de: DateTime = ron::de::from_str(datetime_ser.as_str()).unwrap();
         assert_eq!(datetime_de, datetime);
diff --git a/gstreamer/src/structure_serde.rs b/gstreamer/src/structure_serde.rs
index 56ac30322..61966e6a0 100644
--- a/gstreamer/src/structure_serde.rs
+++ b/gstreamer/src/structure_serde.rs
@@ -186,7 +186,7 @@ mod tests {
             .field("date", &Date::new_dmy(19, DateMonth::August, 2019))
             .field(
                 "date_time",
-                &DateTime::new(2f32, 2019, 8, 19, 13, 34, 42f64),
+                &DateTime::new(2f32, 2019, 8, 19, 13, 34, 42f64).unwrap(),
             )
             .field("array", &Array::new(&[&1, &2]))
             .build();
@@ -244,7 +244,7 @@ mod tests {
                     ("date", &Date::new_dmy(19, DateMonth::August, 2019)),
                     (
                         "date_time",
-                        &DateTime::new(2f32, 2019, 8, 19, 13, 34, 42f64)
+                        &DateTime::new(2f32, 2019, 8, 19, 13, 34, 42f64).unwrap()
                     ),
                     ("fraction", &Fraction::new(1, 2)),
                     ("array", &Array::new(&[&1, &2])),
@@ -266,7 +266,7 @@ mod tests {
             .field("date", &Date::new_dmy(19, DateMonth::August, 2019))
             .field(
                 "date_time",
-                &DateTime::new(2f32, 2019, 8, 19, 13, 34, 42f64),
+                &DateTime::new(2f32, 2019, 8, 19, 13, 34, 42f64).unwrap(),
             )
             .field("array", &Array::new(&[&1, &2]))
             .build();
diff --git a/gstreamer/src/tags_serde.rs b/gstreamer/src/tags_serde.rs
index eb61514dd..46ed1903c 100644
--- a/gstreamer/src/tags_serde.rs
+++ b/gstreamer/src/tags_serde.rs
@@ -347,7 +347,10 @@ mod tests {
                 &glib::Date::new_dmy(28, glib::DateMonth::May, 2018),
                 TagMergeMode::Append,
             );
-            tags.add::<DateTime>(&::DateTime::new_ymd(2018, 5, 28), TagMergeMode::Append);
+            tags.add::<DateTime>(
+                &::DateTime::new_ymd(2018, 5, 28).unwrap(),
+                TagMergeMode::Append,
+            );
 
             let sample = {
                 let mut buffer = Buffer::from_slice(vec![1, 2, 3, 4]);
@@ -497,7 +500,7 @@ mod tests {
         );
         assert_eq!(
             tags.get_index::<DateTime>(0).unwrap().get().unwrap(),
-            ::DateTime::new_ymd(2018, 5, 28)
+            ::DateTime::new_ymd(2018, 5, 28).unwrap()
         );
         let sample = tags.get_index::<Image>(0).unwrap().get().unwrap();
         let buffer = sample.get_buffer().unwrap();
@@ -538,7 +541,7 @@ mod tests {
         );
         assert_eq!(
             tags.get_index::<DateTime>(0).unwrap().get().unwrap(),
-            ::DateTime::new_ymd(2018, 5, 28)
+            ::DateTime::new_ymd(2018, 5, 28).unwrap()
         );
         let sample = tags.get_index::<Image>(0).unwrap().get().unwrap();
         let buffer = sample.get_buffer().unwrap();
@@ -566,7 +569,10 @@ mod tests {
                 &glib::Date::new_dmy(28, glib::DateMonth::May, 2018),
                 TagMergeMode::Append,
             );
-            tags.add::<DateTime>(&::DateTime::new_ymd(2018, 5, 28), TagMergeMode::Append);
+            tags.add::<DateTime>(
+                &::DateTime::new_ymd(2018, 5, 28).unwrap(),
+                TagMergeMode::Append,
+            );
 
             let sample = {
                 let mut buffer = Buffer::from_slice(vec![1, 2, 3, 4]);
@@ -612,7 +618,7 @@ mod tests {
         );
         assert_eq!(
             tags.get_index::<DateTime>(0).unwrap().get().unwrap(),
-            ::DateTime::new_ymd(2018, 5, 28)
+            ::DateTime::new_ymd(2018, 5, 28).unwrap()
         );
         let sample = tags.get_index::<Image>(0).unwrap().get().unwrap();
         let buffer = sample.get_buffer().unwrap();
diff --git a/gstreamer/src/value_serde.rs b/gstreamer/src/value_serde.rs
index 3958c0912..8186b90e5 100644
--- a/gstreamer/src/value_serde.rs
+++ b/gstreamer/src/value_serde.rs
@@ -433,7 +433,9 @@ mod tests {
         let value_str_none = str_none.to_value();
         let send_value_str_none = value_str_none.try_into_send_value::<String>().unwrap();
 
-        let value_date_time = DateTime::new(2f32, 2019, 8, 19, 13, 34, 42f64).to_value();
+        let value_date_time = DateTime::new(2f32, 2019, 8, 19, 13, 34, 42f64)
+            .unwrap()
+            .to_value();
         let send_value_date_time = value_date_time.try_into_send_value::<DateTime>().unwrap();
 
         let date_time_none: Option<DateTime> = None;
@@ -648,7 +650,7 @@ mod tests {
         assert!(slice[2].get::<String>().expect("slice[2]").is_none());
 
         assert_eq!(
-            DateTime::new(2f32, 2019, 8, 19, 13, 34, 42f64),
+            DateTime::new(2f32, 2019, 8, 19, 13, 34, 42f64).unwrap(),
             slice[3].get::<DateTime>().expect("slice[3]").unwrap()
         );
 
@@ -723,7 +725,9 @@ mod tests {
         let str_none: Option<&str> = None;
         let value_str_none = str_none.to_value();
         let send_value_str_none = value_str_none.try_into_send_value::<String>().unwrap();
-        let value_date_time = DateTime::new(2f32, 2019, 8, 19, 13, 34, 42f64).to_value();
+        let value_date_time = DateTime::new(2f32, 2019, 8, 19, 13, 34, 42f64)
+            .unwrap()
+            .to_value();
         let send_value_date_time = value_date_time.try_into_send_value::<DateTime>().unwrap();
         let date_time_none: Option<DateTime> = None;
         let value_date_time_none = date_time_none.to_value();