diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 35936c37d8..fee746d85c 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -26,7 +26,7 @@ variables:
   BACKEND_FLAGS: "-Dx11-backend=true -Dwayland-backend=true -Dbroadway-backend=true"
   FEATURE_FLAGS: "-Dvulkan=enabled -Dcloudproviders=enabled -Dbuild-testsuite=true -Dintrospection=enabled"
   MESON_TEST_TIMEOUT_MULTIPLIER: 3
-  FEDORA_IMAGE: "registry.gitlab.gnome.org/gnome/gtk/fedora:v49"
+  FEDORA_IMAGE: "registry.gitlab.gnome.org/gnome/gtk/fedora:v52"
 
 workflow:
   rules:
diff --git a/.gitlab-ci/fedora.Dockerfile b/.gitlab-ci/fedora.Dockerfile
index ccb67dc5dd..88167f4056 100644
--- a/.gitlab-ci/fedora.Dockerfile
+++ b/.gitlab-ci/fedora.Dockerfile
@@ -1,4 +1,4 @@
-FROM fedora:39
+FROM fedora:40
 
 RUN dnf -y install \
     adwaita-icon-theme \
@@ -99,8 +99,11 @@ RUN dnf -y install \
     which \
     wireplumber \
     xorg-x11-server-Xvfb \
+ && dnf -y update \
  && dnf clean all
 
+RUN rm /usr/share/vulkan/icd.d/powervr_mesa_icd.x86_64.json
+
 # Enable sudo for wheel users
 RUN sed -i -e 's/# %wheel/%wheel/' -e '0,/%wheel/{s/%wheel/# %wheel/}' /etc/sudoers
 
diff --git a/gsk/gl/fp16.c b/gsk/gl/fp16.c
index cc227a3ac1..0fd7a7c240 100644
--- a/gsk/gl/fp16.c
+++ b/gsk/gl/fp16.c
@@ -133,7 +133,7 @@ void half_to_float4 (const guint16 h[4], float f[4]) __attribute__((ifunc ("reso
 void float_to_half (const float *f, guint16 *h, int n) __attribute__((ifunc ("resolve_float_to_half")));
 void half_to_float (const guint16 *h, float *f, int n) __attribute__((ifunc ("resolve_half_to_float")));
 
-static void * __attribute__ ((no_sanitize_address))
+static void * __attribute__ ((no_sanitize_address)) G_GNUC_UNUSED
 resolve_float_to_half4 (void)
 {
   __builtin_cpu_init ();
@@ -143,7 +143,7 @@ resolve_float_to_half4 (void)
     return float_to_half4_c;
 }
 
-static void * __attribute__ ((no_sanitize_address))
+static void * __attribute__ ((no_sanitize_address)) G_GNUC_UNUSED
 resolve_half_to_float4 (void)
 {
   __builtin_cpu_init ();
@@ -153,7 +153,7 @@ resolve_half_to_float4 (void)
     return half_to_float4_c;
 }
 
-static void * __attribute__ ((no_sanitize_address))
+static void * __attribute__ ((no_sanitize_address)) G_GNUC_UNUSED
 resolve_float_to_half (void)
 {
   __builtin_cpu_init ();
@@ -163,7 +163,7 @@ resolve_float_to_half (void)
     return float_to_half_c;
 }
 
-static void * __attribute__ ((no_sanitize_address))
+static void * __attribute__ ((no_sanitize_address)) G_GNUC_UNUSED
 resolve_half_to_float (void)
 {
   __builtin_cpu_init ();