diff --git a/.github/workflows/zephyr.yml b/.github/workflows/zephyr.yml
index 04d2f4482..051d29d9c 100644
--- a/.github/workflows/zephyr.yml
+++ b/.github/workflows/zephyr.yml
@@ -8,7 +8,7 @@ on: [workflow_call, workflow_dispatch]
 jobs:
 
   zephyr_test:
-    runs-on: ubuntu-22.04
+    runs-on: oqs-x64
     container: ghcr.io/zephyrproject-rtos/ci:v0.27.4
     env:
         CMAKE_PREFIX_PATH: /opt/toolchains