diff --git a/gdk-pixbuf/src/auto/pixbuf.rs b/gdk-pixbuf/src/auto/pixbuf.rs
index 4aede39d1ed6..66288bdc3a40 100644
--- a/gdk-pixbuf/src/auto/pixbuf.rs
+++ b/gdk-pixbuf/src/auto/pixbuf.rs
@@ -549,7 +549,7 @@ impl Pixbuf {
     //}
 
     //#[doc(alias = "gdk_pixbuf_save_to_callbackv")]
-    //pub fn save_to_callbackv<P: FnMut(&Vec<u8>, usize, &glib::Error) -> bool>(&self, save_func: P, type_: &str, option_keys: &[&str], option_values: &[&str]) -> Result<(), glib::Error> {
+    //pub fn save_to_callbackv<P: FnMut(&Vec<u8>, usize, &glib::Error) -> bool>(&self, save_func: P, type_: &str, option_keys: Option<&[&str]>, option_values: Option<&[&str]>) -> Result<(), glib::Error> {
     //    unsafe { TODO: call ffi:gdk_pixbuf_save_to_callbackv() }
     //}
 
diff --git a/gdk-pixbuf/src/auto/versions.txt b/gdk-pixbuf/src/auto/versions.txt
index 9c44f3dbe11d..06dfb1d65192 100644
--- a/gdk-pixbuf/src/auto/versions.txt
+++ b/gdk-pixbuf/src/auto/versions.txt
@@ -1,2 +1,2 @@
-Generated by gir (https://github.com/gtk-rs/gir @ b2a1c6f9b362)
+Generated by gir (https://github.com/gtk-rs/gir @ 9e6d0758f347)
 from gir-files (https://github.com/gtk-rs/gir-files @ f5f1ab94657c)
diff --git a/gdk-pixbuf/sys/versions.txt b/gdk-pixbuf/sys/versions.txt
index 9c44f3dbe11d..06dfb1d65192 100644
--- a/gdk-pixbuf/sys/versions.txt
+++ b/gdk-pixbuf/sys/versions.txt
@@ -1,2 +1,2 @@
-Generated by gir (https://github.com/gtk-rs/gir @ b2a1c6f9b362)
+Generated by gir (https://github.com/gtk-rs/gir @ 9e6d0758f347)
 from gir-files (https://github.com/gtk-rs/gir-files @ f5f1ab94657c)
diff --git a/gio/src/auto/app_info.rs b/gio/src/auto/app_info.rs
index a5b91d0a3f73..0e118892492e 100644
--- a/gio/src/auto/app_info.rs
+++ b/gio/src/auto/app_info.rs
@@ -464,7 +464,7 @@ pub trait AppInfoExt: IsA<AppInfo> + 'static {
     #[doc(alias = "g_app_info_launch")]
     fn launch(
         &self,
-        files: &[File],
+        files: Option<&[File]>,
         context: Option<&impl IsA<AppLaunchContext>>,
     ) -> Result<(), glib::Error> {
         unsafe {
@@ -487,7 +487,7 @@ pub trait AppInfoExt: IsA<AppInfo> + 'static {
     #[doc(alias = "g_app_info_launch_uris")]
     fn launch_uris(
         &self,
-        uris: &[&str],
+        uris: Option<&[&str]>,
         context: Option<&impl IsA<AppLaunchContext>>,
     ) -> Result<(), glib::Error> {
         unsafe {
diff --git a/gio/src/auto/app_launch_context.rs b/gio/src/auto/app_launch_context.rs
index ab4bdb913ad9..fbf7261c9129 100644
--- a/gio/src/auto/app_launch_context.rs
+++ b/gio/src/auto/app_launch_context.rs
@@ -63,7 +63,7 @@ pub trait AppLaunchContextExt: IsA<AppLaunchContext> + 'static {
     fn startup_notify_id(
         &self,
         info: Option<&impl IsA<AppInfo>>,
-        files: &[File],
+        files: Option<&[File]>,
     ) -> Option<glib::GString> {
         unsafe {
             from_glib_full(ffi::g_app_launch_context_get_startup_notify_id(
diff --git a/gio/src/auto/dtls_connection.rs b/gio/src/auto/dtls_connection.rs
index d4446e60db99..c06b223be643 100644
--- a/gio/src/auto/dtls_connection.rs
+++ b/gio/src/auto/dtls_connection.rs
@@ -330,7 +330,7 @@ pub trait DtlsConnectionExt: IsA<DtlsConnection> + 'static {
     #[cfg_attr(docsrs, doc(cfg(feature = "v2_60")))]
     #[doc(alias = "g_dtls_connection_set_advertised_protocols")]
     #[doc(alias = "advertised-protocols")]
-    fn set_advertised_protocols(&self, protocols: &[&str]) {
+    fn set_advertised_protocols(&self, protocols: Option<&[&str]>) {
         unsafe {
             ffi::g_dtls_connection_set_advertised_protocols(
                 self.as_ref().to_glib_none().0,
diff --git a/gio/src/auto/functions.rs b/gio/src/auto/functions.rs
index 5a3df411f7dc..4201f081230a 100644
--- a/gio/src/auto/functions.rs
+++ b/gio/src/auto/functions.rs
@@ -215,7 +215,7 @@ pub fn content_type_is_unknown(type_: &str) -> bool {
 #[cfg(feature = "v2_60")]
 #[cfg_attr(docsrs, doc(cfg(feature = "v2_60")))]
 #[doc(alias = "g_content_type_set_mime_dirs")]
-pub fn content_type_set_mime_dirs(dirs: &[&str]) {
+pub fn content_type_set_mime_dirs(dirs: Option<&[&str]>) {
     unsafe {
         ffi::g_content_type_set_mime_dirs(dirs.to_glib_none().0);
     }
diff --git a/gio/src/auto/versions.txt b/gio/src/auto/versions.txt
index 9c44f3dbe11d..06dfb1d65192 100644
--- a/gio/src/auto/versions.txt
+++ b/gio/src/auto/versions.txt
@@ -1,2 +1,2 @@
-Generated by gir (https://github.com/gtk-rs/gir @ b2a1c6f9b362)
+Generated by gir (https://github.com/gtk-rs/gir @ 9e6d0758f347)
 from gir-files (https://github.com/gtk-rs/gir-files @ f5f1ab94657c)
diff --git a/gio/sys/versions.txt b/gio/sys/versions.txt
index 9c44f3dbe11d..06dfb1d65192 100644
--- a/gio/sys/versions.txt
+++ b/gio/sys/versions.txt
@@ -1,2 +1,2 @@
-Generated by gir (https://github.com/gtk-rs/gir @ b2a1c6f9b362)
+Generated by gir (https://github.com/gtk-rs/gir @ 9e6d0758f347)
 from gir-files (https://github.com/gtk-rs/gir-files @ f5f1ab94657c)
diff --git a/gir b/gir
index b2a1c6f9b362..9e6d0758f347 160000
--- a/gir
+++ b/gir
@@ -1 +1 @@
-Subproject commit b2a1c6f9b3622c45e67af75479eaf640a8af0081
+Subproject commit 9e6d0758f347dea5ebe365be93bf7740d4626887
diff --git a/glib/gobject-sys/versions.txt b/glib/gobject-sys/versions.txt
index 9c44f3dbe11d..06dfb1d65192 100644
--- a/glib/gobject-sys/versions.txt
+++ b/glib/gobject-sys/versions.txt
@@ -1,2 +1,2 @@
-Generated by gir (https://github.com/gtk-rs/gir @ b2a1c6f9b362)
+Generated by gir (https://github.com/gtk-rs/gir @ 9e6d0758f347)
 from gir-files (https://github.com/gtk-rs/gir-files @ f5f1ab94657c)
diff --git a/glib/src/auto/functions.rs b/glib/src/auto/functions.rs
index 815147662c16..33c0f5c0e2ae 100644
--- a/glib/src/auto/functions.rs
+++ b/glib/src/auto/functions.rs
@@ -39,8 +39,8 @@ pub fn base64_decode(text: &str) -> Vec<u8> {
 //}
 
 #[doc(alias = "g_base64_encode")]
-pub fn base64_encode(data: &[u8]) -> crate::GString {
-    let len = data.len() as _;
+pub fn base64_encode(data: Option<&[u8]>) -> crate::GString {
+    let len = data.map(|arr| arr.len()).unwrap_or(0) as _;
     unsafe { from_glib_full(ffi::g_base64_encode(data.to_glib_none().0, len)) }
 }
 
@@ -711,7 +711,7 @@ pub fn spaced_primes_closest(num: u32) -> u32 {
 pub fn spawn_async(
     working_directory: Option<impl AsRef<std::path::Path>>,
     argv: &[&std::path::Path],
-    envp: &[&std::path::Path],
+    envp: Option<&[&std::path::Path]>,
     flags: SpawnFlags,
     child_setup: Option<Box_<dyn FnOnce() + 'static>>,
 ) -> Result<Pid, crate::Error> {
@@ -756,7 +756,7 @@ pub fn spawn_async(
 //#[cfg(feature = "v2_68")]
 //#[cfg_attr(docsrs, doc(cfg(feature = "v2_68")))]
 //#[doc(alias = "g_spawn_async_with_pipes_and_fds")]
-//pub fn spawn_async_with_pipes_and_fds(working_directory: Option<impl AsRef<std::path::Path>>, argv: &[&std::path::Path], envp: &[&std::path::Path], flags: SpawnFlags, child_setup: Option<Box_<dyn FnOnce() + 'static>>, stdin_fd: i32, stdout_fd: i32, stderr_fd: i32, source_fds: &[i32], target_fds: &[i32], n_fds: usize) -> Result<(Pid, i32, i32, i32), crate::Error> {
+//pub fn spawn_async_with_pipes_and_fds(working_directory: Option<impl AsRef<std::path::Path>>, argv: &[&std::path::Path], envp: Option<&[&std::path::Path]>, flags: SpawnFlags, child_setup: Option<Box_<dyn FnOnce() + 'static>>, stdin_fd: i32, stdout_fd: i32, stderr_fd: i32, source_fds: Option<&[i32]>, target_fds: Option<&[i32]>, n_fds: usize) -> Result<(Pid, i32, i32, i32), crate::Error> {
 //    unsafe { TODO: call ffi:g_spawn_async_with_pipes_and_fds() }
 //}
 
@@ -817,7 +817,7 @@ pub fn spawn_command_line_async(
 //}
 
 //#[doc(alias = "g_spawn_sync")]
-//pub fn spawn_sync(working_directory: Option<impl AsRef<std::path::Path>>, argv: &[&std::path::Path], envp: &[&std::path::Path], flags: SpawnFlags, child_setup: Option<&mut dyn (FnMut())>, standard_output: Vec<u8>, standard_error: Vec<u8>) -> Result<i32, crate::Error> {
+//pub fn spawn_sync(working_directory: Option<impl AsRef<std::path::Path>>, argv: &[&std::path::Path], envp: Option<&[&std::path::Path]>, flags: SpawnFlags, child_setup: Option<&mut dyn (FnMut())>, standard_output: Vec<u8>, standard_error: Vec<u8>) -> Result<i32, crate::Error> {
 //    unsafe { TODO: call ffi:g_spawn_sync() }
 //}
 
diff --git a/glib/src/auto/versions.txt b/glib/src/auto/versions.txt
index 9c44f3dbe11d..06dfb1d65192 100644
--- a/glib/src/auto/versions.txt
+++ b/glib/src/auto/versions.txt
@@ -1,2 +1,2 @@
-Generated by gir (https://github.com/gtk-rs/gir @ b2a1c6f9b362)
+Generated by gir (https://github.com/gtk-rs/gir @ 9e6d0758f347)
 from gir-files (https://github.com/gtk-rs/gir-files @ f5f1ab94657c)
diff --git a/glib/sys/versions.txt b/glib/sys/versions.txt
index 9c44f3dbe11d..06dfb1d65192 100644
--- a/glib/sys/versions.txt
+++ b/glib/sys/versions.txt
@@ -1,2 +1,2 @@
-Generated by gir (https://github.com/gtk-rs/gir @ b2a1c6f9b362)
+Generated by gir (https://github.com/gtk-rs/gir @ 9e6d0758f347)
 from gir-files (https://github.com/gtk-rs/gir-files @ f5f1ab94657c)
diff --git a/graphene/src/auto/versions.txt b/graphene/src/auto/versions.txt
index 9c44f3dbe11d..06dfb1d65192 100644
--- a/graphene/src/auto/versions.txt
+++ b/graphene/src/auto/versions.txt
@@ -1,2 +1,2 @@
-Generated by gir (https://github.com/gtk-rs/gir @ b2a1c6f9b362)
+Generated by gir (https://github.com/gtk-rs/gir @ 9e6d0758f347)
 from gir-files (https://github.com/gtk-rs/gir-files @ f5f1ab94657c)
diff --git a/graphene/sys/versions.txt b/graphene/sys/versions.txt
index 9c44f3dbe11d..06dfb1d65192 100644
--- a/graphene/sys/versions.txt
+++ b/graphene/sys/versions.txt
@@ -1,2 +1,2 @@
-Generated by gir (https://github.com/gtk-rs/gir @ b2a1c6f9b362)
+Generated by gir (https://github.com/gtk-rs/gir @ 9e6d0758f347)
 from gir-files (https://github.com/gtk-rs/gir-files @ f5f1ab94657c)
diff --git a/pango/src/auto/versions.txt b/pango/src/auto/versions.txt
index 9c44f3dbe11d..06dfb1d65192 100644
--- a/pango/src/auto/versions.txt
+++ b/pango/src/auto/versions.txt
@@ -1,2 +1,2 @@
-Generated by gir (https://github.com/gtk-rs/gir @ b2a1c6f9b362)
+Generated by gir (https://github.com/gtk-rs/gir @ 9e6d0758f347)
 from gir-files (https://github.com/gtk-rs/gir-files @ f5f1ab94657c)
diff --git a/pango/sys/versions.txt b/pango/sys/versions.txt
index 9c44f3dbe11d..06dfb1d65192 100644
--- a/pango/sys/versions.txt
+++ b/pango/sys/versions.txt
@@ -1,2 +1,2 @@
-Generated by gir (https://github.com/gtk-rs/gir @ b2a1c6f9b362)
+Generated by gir (https://github.com/gtk-rs/gir @ 9e6d0758f347)
 from gir-files (https://github.com/gtk-rs/gir-files @ f5f1ab94657c)
diff --git a/pangocairo/src/auto/versions.txt b/pangocairo/src/auto/versions.txt
index 9c44f3dbe11d..06dfb1d65192 100644
--- a/pangocairo/src/auto/versions.txt
+++ b/pangocairo/src/auto/versions.txt
@@ -1,2 +1,2 @@
-Generated by gir (https://github.com/gtk-rs/gir @ b2a1c6f9b362)
+Generated by gir (https://github.com/gtk-rs/gir @ 9e6d0758f347)
 from gir-files (https://github.com/gtk-rs/gir-files @ f5f1ab94657c)
diff --git a/pangocairo/sys/versions.txt b/pangocairo/sys/versions.txt
index 9c44f3dbe11d..06dfb1d65192 100644
--- a/pangocairo/sys/versions.txt
+++ b/pangocairo/sys/versions.txt
@@ -1,2 +1,2 @@
-Generated by gir (https://github.com/gtk-rs/gir @ b2a1c6f9b362)
+Generated by gir (https://github.com/gtk-rs/gir @ 9e6d0758f347)
 from gir-files (https://github.com/gtk-rs/gir-files @ f5f1ab94657c)