diff --git a/.gitea/workflows/gtk-rpm-release.yaml b/.gitea/workflows/gtk-rpm-release.yaml
index 1276f2a..e405ee8 100644
--- a/.gitea/workflows/gtk-rpm-release.yaml
+++ b/.gitea/workflows/gtk-rpm-release.yaml
@@ -14,7 +14,7 @@ jobs:
   build-gtk-rpm-release:
     runs-on: ubuntu-latest
     container:
-      image: fedora:40
+      image: fedora:43
 
     steps:
       # The default Gitea runner image is Debian-based. Build the GTK RPM in a
diff --git a/gtk/Dockerfile b/gtk/Dockerfile
index 873c2ba..b6b9093 100644
--- a/gtk/Dockerfile
+++ b/gtk/Dockerfile
@@ -1,4 +1,4 @@
-FROM fedora:40
+FROM fedora:43
 
 # Install RPM build tools and dependencies
 RUN dnf update -y && dnf install -y \