diff --git a/gstreamer-base/Gir.toml b/gstreamer-base/Gir.toml
index 0dace78c4..fd8151fc6 100644
--- a/gstreamer-base/Gir.toml
+++ b/gstreamer-base/Gir.toml
@@ -8,6 +8,7 @@ concurrency = "send+sync"
 generate_safety_asserts = true
 single_version_file = true
 generate_display_trait = false
+trust_return_value_nullability = true
 
 external_libraries = [
     "GLib",
diff --git a/gstreamer-check/Gir.toml b/gstreamer-check/Gir.toml
index b95e95c08..e6d170cc9 100644
--- a/gstreamer-check/Gir.toml
+++ b/gstreamer-check/Gir.toml
@@ -8,6 +8,7 @@ concurrency = "send+sync"
 generate_safety_asserts = true
 single_version_file = true
 generate_display_trait = false
+trust_return_value_nullability = true
 
 external_libraries = [
     "GLib",
diff --git a/gstreamer-net/Gir.toml b/gstreamer-net/Gir.toml
index e751026c0..4e4180433 100644
--- a/gstreamer-net/Gir.toml
+++ b/gstreamer-net/Gir.toml
@@ -8,6 +8,7 @@ concurrency = "send+sync"
 generate_safety_asserts = true
 single_version_file = true
 generate_display_trait = false
+trust_return_value_nullability = true
 
 external_libraries = [
     "GLib",
diff --git a/gstreamer/Gir.toml b/gstreamer/Gir.toml
index 1931c947c..3e3fdc2c6 100644
--- a/gstreamer/Gir.toml
+++ b/gstreamer/Gir.toml
@@ -8,6 +8,7 @@ concurrency = "send+sync"
 generate_safety_asserts = true
 single_version_file = true
 generate_display_trait = false
+trust_return_value_nullability = true
 
 external_libraries = [
     "GLib",