diff --git a/.github/workflows/armhf_lxd.yaml b/.github/workflows/armhf_lxd.yaml
index a055c11c12..1ba8737c11 100644
--- a/.github/workflows/armhf_lxd.yaml
+++ b/.github/workflows/armhf_lxd.yaml
@@ -14,7 +14,7 @@ jobs:
             snapcraft_channel: "8.x"
             runner_os: "ubuntu-22.04"
           - series: "series18"
-            snapcraft_channel: "5.x"
+            snapcraft_channel: "4.x"
             runner_os: "ubuntu-22.04"
           - snapcraft_channel: "4.x"
             series: "series16"
@@ -23,7 +23,7 @@ jobs:
     name: "Build: ${{ matrix.series }} (Snapcraft ${{ matrix.snapcraft_channel }})"
     steps:
       - name: Ubuntu 18.04 upgrade Python
-        if: ${{ matrix.runner_os == 'ubuntu-18.04' }}
+        if: ${{ matrix.runner_os == 'ubuntu-20.04' }}
         run: |
           sudo add-apt-repository ppa:deadsnakes/ppa
           sudo apt -y update