diff --git a/Gir_GstBase.toml b/Gir_GstBase.toml
index d75ebc231..df5c47007 100644
--- a/Gir_GstBase.toml
+++ b/Gir_GstBase.toml
@@ -92,6 +92,11 @@ name = "GstBase.BaseSrc"
 subclassing = true
 status = "generate"
 
+    [[object.function]]
+    name = "set_caps"
+        [object.function.return]
+        bool_return_is_error = "Failed to set caps"
+
     [[object.function]]
     name = "start_complete"
     # Use Result<FlowSuccess, FlowError>
@@ -117,6 +122,12 @@ name = "GstBase.BaseTransform"
 subclassing = true
 status = "generate"
 
+    [[object.function]]
+    name = "update_src_caps"
+        [object.function.return]
+        bool_return_is_error = "Failed to update src caps"
+
+
 [[object]]
 name = "GstBase.Aggregator"
 status = "generate"
diff --git a/gstreamer-base/src/auto/base_src.rs b/gstreamer-base/src/auto/base_src.rs
index ccd9de85d..3ca63ebed 100644
--- a/gstreamer-base/src/auto/base_src.rs
+++ b/gstreamer-base/src/auto/base_src.rs
@@ -3,6 +3,7 @@
 // DO NOT EDIT
 
 use ffi;
+use glib;
 use glib::StaticType;
 use glib::Value;
 use glib::object::Cast;
@@ -53,7 +54,7 @@ pub trait BaseSrcExt: 'static {
 
     fn set_blocksize(&self, blocksize: u32);
 
-    fn set_caps(&self, caps: &gst::Caps) -> bool;
+    fn set_caps(&self, caps: &gst::Caps) -> Result<(), glib::error::BoolError>;
 
     fn set_do_timestamp(&self, timestamp: bool);
 
@@ -149,9 +150,9 @@ impl<O: IsA<BaseSrc>> BaseSrcExt for O {
         }
     }
 
-    fn set_caps(&self, caps: &gst::Caps) -> bool {
+    fn set_caps(&self, caps: &gst::Caps) -> Result<(), glib::error::BoolError> {
         unsafe {
-            from_glib(ffi::gst_base_src_set_caps(self.as_ref().to_glib_none().0, caps.to_glib_none().0))
+            glib_result_from_gboolean!(ffi::gst_base_src_set_caps(self.as_ref().to_glib_none().0, caps.to_glib_none().0), "Failed to set caps")
         }
     }
 
diff --git a/gstreamer-base/src/auto/base_transform.rs b/gstreamer-base/src/auto/base_transform.rs
index a451d9150..e38682980 100644
--- a/gstreamer-base/src/auto/base_transform.rs
+++ b/gstreamer-base/src/auto/base_transform.rs
@@ -3,6 +3,7 @@
 // DO NOT EDIT
 
 use ffi;
+use glib;
 use glib::StaticType;
 use glib::Value;
 use glib::object::Cast;
@@ -56,7 +57,7 @@ pub trait BaseTransformExt: 'static {
 
     fn update_qos(&self, proportion: f64, diff: gst::ClockTimeDiff, timestamp: gst::ClockTime);
 
-    fn update_src_caps(&self, updated_caps: &gst::Caps) -> bool;
+    fn update_src_caps(&self, updated_caps: &gst::Caps) -> Result<(), glib::error::BoolError>;
 
     fn get_property_qos(&self) -> bool;
 
@@ -142,9 +143,9 @@ impl<O: IsA<BaseTransform>> BaseTransformExt for O {
         }
     }
 
-    fn update_src_caps(&self, updated_caps: &gst::Caps) -> bool {
+    fn update_src_caps(&self, updated_caps: &gst::Caps) -> Result<(), glib::error::BoolError> {
         unsafe {
-            from_glib(ffi::gst_base_transform_update_src_caps(self.as_ref().to_glib_none().0, updated_caps.to_glib_none().0))
+            glib_result_from_gboolean!(ffi::gst_base_transform_update_src_caps(self.as_ref().to_glib_none().0, updated_caps.to_glib_none().0), "Failed to update src caps")
         }
     }