diff --git a/gstreamer-app/Gir.toml b/gstreamer-app/Gir.toml
index 1a6df5e95..fb238a820 100644
--- a/gstreamer-app/Gir.toml
+++ b/gstreamer-app/Gir.toml
@@ -61,6 +61,14 @@ final_type = true
     # Action signal
     ignore = true
 
+    [[object.signal]]
+    name = "new-sample"
+    concurrency = "send"
+
+    [[object.signal]]
+    name = "new-preroll"
+    concurrency = "send"
+
     [[object.signal]]
     name = "eos"
     concurrency = "send"
diff --git a/gstreamer-app/src/auto/app_sink.rs b/gstreamer-app/src/auto/app_sink.rs
index 38f1da998..4d943ffad 100644
--- a/gstreamer-app/src/auto/app_sink.rs
+++ b/gstreamer-app/src/auto/app_sink.rs
@@ -210,13 +210,13 @@ impl AppSink {
 
     #[doc(alias = "new-preroll")]
     pub fn connect_new_preroll<
-        F: Fn(&AppSink) -> Result<gst::FlowSuccess, gst::FlowError> + Send + Sync + 'static,
+        F: Fn(&AppSink) -> Result<gst::FlowSuccess, gst::FlowError> + Send + 'static,
     >(
         &self,
         f: F,
     ) -> SignalHandlerId {
         unsafe extern "C" fn new_preroll_trampoline<
-            F: Fn(&AppSink) -> Result<gst::FlowSuccess, gst::FlowError> + Send + Sync + 'static,
+            F: Fn(&AppSink) -> Result<gst::FlowSuccess, gst::FlowError> + Send + 'static,
         >(
             this: *mut ffi::GstAppSink,
             f: glib::ffi::gpointer,
@@ -239,13 +239,13 @@ impl AppSink {
 
     #[doc(alias = "new-sample")]
     pub fn connect_new_sample<
-        F: Fn(&AppSink) -> Result<gst::FlowSuccess, gst::FlowError> + Send + Sync + 'static,
+        F: Fn(&AppSink) -> Result<gst::FlowSuccess, gst::FlowError> + Send + 'static,
     >(
         &self,
         f: F,
     ) -> SignalHandlerId {
         unsafe extern "C" fn new_sample_trampoline<
-            F: Fn(&AppSink) -> Result<gst::FlowSuccess, gst::FlowError> + Send + Sync + 'static,
+            F: Fn(&AppSink) -> Result<gst::FlowSuccess, gst::FlowError> + Send + 'static,
         >(
             this: *mut ffi::GstAppSink,
             f: glib::ffi::gpointer,