diff --git a/.github/workflows/armhf_lxd.yaml b/.github/workflows/armhf_lxd.yaml
index 231a4de441..e4ecacdc8b 100644
--- a/.github/workflows/armhf_lxd.yaml
+++ b/.github/workflows/armhf_lxd.yaml
@@ -14,11 +14,11 @@ jobs:
             snapcraft_channel: "8.x"
             runner_os: "ubuntu-22.04"
           - series: "series18"
-            snapcraft_channel: "7.x"
+            snapcraft_channel: "6.x"
             runner_os: "ubuntu-22.04"
           - snapcraft_channel: "4.x"
             series: "series16"
-            runner_os: "ubuntu-18.04"
+            runner_os: "ubuntu-20.04"
     runs-on: ${{ matrix.runner_os }}
     name: "Build: ${{ matrix.series }} (Snapcraft ${{ matrix.snapcraft_channel }})"
     steps: