diff --git a/gstreamer-audio/src/audio_converter.rs b/gstreamer-audio/src/audio_converter.rs
index 05b00a13e..cb36b7399 100644
--- a/gstreamer-audio/src/audio_converter.rs
+++ b/gstreamer-audio/src/audio_converter.rs
@@ -126,7 +126,7 @@ impl AudioConverterConfig {
             .unwrap_or(crate::AudioResamplerMethod::BlackmanNuttall)
     }
 
-    pub fn set_mix_matrix<T: AsRef<[f32]>>(&mut self, v: &[T]) {
+    pub fn set_mix_matrix(&mut self, v: &[impl AsRef<[f32]>]) {
         let length = v.get(0).map(|v| v.as_ref().len()).unwrap_or(0);
         let array = gst::Array::from_owned(
             v.iter()
diff --git a/gstreamer-base/src/functions.rs b/gstreamer-base/src/functions.rs
index 7a9938731..ac3d7063f 100644
--- a/gstreamer-base/src/functions.rs
+++ b/gstreamer-base/src/functions.rs
@@ -5,9 +5,9 @@ use glib::translate::*;
 use std::mem;
 
 #[doc(alias = "gst_type_find_helper_for_data")]
-pub fn type_find_helper_for_data<P: IsA<gst::Object>, R: AsRef<[u8]>>(
-    obj: Option<&P>,
-    data: R,
+pub fn type_find_helper_for_data(
+    obj: Option<&impl IsA<gst::Object>>,
+    data: impl AsRef<[u8]>,
 ) -> Result<(gst::Caps, gst::TypeFindProbability), glib::error::BoolError> {
     assert_initialized_main_thread!();
     unsafe {
@@ -31,9 +31,9 @@ pub fn type_find_helper_for_data<P: IsA<gst::Object>, R: AsRef<[u8]>>(
 #[cfg(any(feature = "v1_16", feature = "dox"))]
 #[cfg_attr(feature = "dox", doc(cfg(feature = "v1_16")))]
 #[doc(alias = "gst_type_find_helper_for_data_with_extension")]
-pub fn type_find_helper_for_data_with_extension<P: IsA<gst::Object>, R: AsRef<[u8]>>(
-    obj: Option<&P>,
-    data: R,
+pub fn type_find_helper_for_data_with_extension(
+    obj: Option<&impl IsA<gst::Object>>,
+    data: impl AsRef<[u8]>,
     extension: Option<&str>,
 ) -> Result<(gst::Caps, gst::TypeFindProbability), glib::error::BoolError> {
     assert_initialized_main_thread!();
diff --git a/gstreamer-check/src/harness.rs b/gstreamer-check/src/harness.rs
index 99e372b34..6aaa39cd2 100644
--- a/gstreamer-check/src/harness.rs
+++ b/gstreamer-check/src/harness.rs
@@ -197,7 +197,7 @@ impl Harness {
     }
 
     #[doc(alias = "gst_harness_dump_to_file")]
-    pub fn dump_to_file<P: AsRef<path::Path>>(&mut self, filename: P) {
+    pub fn dump_to_file(&mut self, filename: impl AsRef<path::Path>) {
         let filename = filename.as_ref();
         unsafe {
             ffi::gst_harness_dump_to_file(self.0.as_ptr(), filename.to_glib_none().0);
diff --git a/gstreamer/src/bin.rs b/gstreamer/src/bin.rs
index 8c1d84289..0b8bad588 100644
--- a/gstreamer/src/bin.rs
+++ b/gstreamer/src/bin.rs
@@ -44,15 +44,15 @@ pub trait GstBinExtManual: 'static {
     fn children(&self) -> Vec<Element>;
 
     fn debug_to_dot_data(&self, details: crate::DebugGraphDetails) -> GString;
-    fn debug_to_dot_file<Q: AsRef<path::Path>>(
+    fn debug_to_dot_file(
         &self,
         details: crate::DebugGraphDetails,
-        file_name: Q,
+        file_name: impl AsRef<path::Path>,
     );
-    fn debug_to_dot_file_with_ts<Q: AsRef<path::Path>>(
+    fn debug_to_dot_file_with_ts(
         &self,
         details: crate::DebugGraphDetails,
-        file_name: Q,
+        file_name: impl AsRef<path::Path>,
     );
 
     fn set_bin_flags(&self, flags: BinFlags);
@@ -166,18 +166,18 @@ impl<O: IsA<Bin>> GstBinExtManual for O {
         crate::debug_bin_to_dot_data(self, details)
     }
 
-    fn debug_to_dot_file<Q: AsRef<path::Path>>(
+    fn debug_to_dot_file(
         &self,
         details: crate::DebugGraphDetails,
-        file_name: Q,
+        file_name: impl AsRef<path::Path>,
     ) {
         crate::debug_bin_to_dot_file(self, details, file_name)
     }
 
-    fn debug_to_dot_file_with_ts<Q: AsRef<path::Path>>(
+    fn debug_to_dot_file_with_ts(
         &self,
         details: crate::DebugGraphDetails,
-        file_name: Q,
+        file_name: impl AsRef<path::Path>,
     ) {
         crate::debug_bin_to_dot_file_with_ts(self, details, file_name)
     }
diff --git a/gstreamer/src/stream_collection.rs b/gstreamer/src/stream_collection.rs
index cb3faa68b..011be8741 100644
--- a/gstreamer/src/stream_collection.rs
+++ b/gstreamer/src/stream_collection.rs
@@ -74,7 +74,7 @@ impl StreamCollectionBuilder {
         self
     }
 
-    pub fn streams<S: AsRef<Stream>>(self, streams: &[S]) -> Self {
+    pub fn streams(self, streams: &[impl AsRef<Stream>]) -> Self {
         for stream in streams {
             unsafe {
                 ffi::gst_stream_collection_add_stream(
diff --git a/gstreamer/src/value.rs b/gstreamer/src/value.rs
index 358c915ad..beece920d 100644
--- a/gstreamer/src/value.rs
+++ b/gstreamer/src/value.rs
@@ -634,7 +634,7 @@ impl<'a> Array<'a> {
         Array(values.iter().map(|v| v.to_send_value()).collect())
     }
 
-    pub fn from_borrowed<T: AsRef<[glib::SendValue]>>(values: &'a T) -> Self {
+    pub fn from_borrowed(values: &'a impl AsRef<[glib::SendValue]>) -> Self {
         assert_initialized_main_thread!();
 
         Array(Cow::Borrowed(values.as_ref()))
@@ -728,7 +728,7 @@ impl<'a> List<'a> {
         List(values.iter().map(|v| v.to_send_value()).collect())
     }
 
-    pub fn from_borrowed<T: AsRef<[glib::SendValue]>>(values: &'a T) -> Self {
+    pub fn from_borrowed(values: &'a impl AsRef<[glib::SendValue]>) -> Self {
         assert_initialized_main_thread!();
 
         List(Cow::Borrowed(values.as_ref()))