diff --git a/.github/workflows/weekly_flatpak.yml b/.github/workflows/weekly_flatpak.yml
index c1c7c4d5e..076969cc1 100644
--- a/.github/workflows/weekly_flatpak.yml
+++ b/.github/workflows/weekly_flatpak.yml
@@ -12,11 +12,11 @@ jobs:
     # again
     runs-on: ubuntu-24.04
     container:
-      image: bilelmoussaoui/flatpak-github-actions:gnome-nightly
+      image: bilelmoussaoui/flatpak-github-actions:gnome-46
       options: --privileged
     steps:
-    - uses: actions/checkout@v2
-    - uses: bilelmoussaoui/flatpak-github-actions/flatpak-builder@v4
+    - uses: actions/checkout@v4
+    - uses: flatpak/flatpak-github-actions/flatpak-builder@v6
       with:
         bundle: org.gnome.GTG.Devel.flatpak
         manifest-path: build-aux/org.gnome.GTG.Devel.json
diff --git a/build-aux/org.gnome.GTG.Devel.json b/build-aux/org.gnome.GTG.Devel.json
index 80545853f..9da2661f8 100644
--- a/build-aux/org.gnome.GTG.Devel.json
+++ b/build-aux/org.gnome.GTG.Devel.json
@@ -1,7 +1,7 @@
 {
   "app-id": "org.gnome.GTG.Devel",
   "runtime": "org.gnome.Platform",
-  "runtime-version": "master",
+  "runtime-version": "46",
   "sdk": "org.gnome.Sdk",
   "command": "gtg",
   "tags": ["devel", "development", "nightly"],