diff --git a/container.yaml b/container.yaml
index 84f70ff..aa33ad5 100644
--- a/container.yaml
+++ b/container.yaml
@@ -10,6 +10,6 @@ flatpak:
         --socket=fallback-x11
         --socket=wayland
     runtime-name: flatpak-kde5-runtime
-    runtime-version: f39
+    runtime-version: f40
     packages:
         - kdiff3