diff --git a/.github/workflows/ci.generate.ts b/.github/workflows/ci.generate.ts
index 6f017b0..ef2febb 100644
--- a/.github/workflows/ci.generate.ts
+++ b/.github/workflows/ci.generate.ts
@@ -8,7 +8,7 @@ enum Runner {
   // uses an older version of ubuntu because of issue dprint/#483
   Linux = "ubuntu-20.04",
   LinuxArm =
-    "(github.ref == 'refs/heads/main' || startsWith(github.ref, 'refs/tags/')) && 'buildjet-2vcpu-ubuntu-2204-arm' || 'ubuntu-latest'",
+    "${{ (github.ref == 'refs/heads/main' || startsWith(github.ref, 'refs/tags/')) && 'buildjet-2vcpu-ubuntu-2204-arm' || 'ubuntu-latest' }}",
 }
 
 interface ProfileData {
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 0ac4da9..d5af912 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -36,7 +36,7 @@ jobs:
             run_tests: "true"
             cross: "false"
             target: x86_64-unknown-linux-gnu
-          - os: "(github.ref == 'refs/heads/main' || startsWith(github.ref, 'refs/tags/')) && 'buildjet-2vcpu-ubuntu-2204-arm' || 'ubuntu-latest'"
+          - os: "${{ (github.ref == 'refs/heads/main' || startsWith(github.ref, 'refs/tags/')) && 'buildjet-2vcpu-ubuntu-2204-arm' || 'ubuntu-latest' }}"
             run_tests: "true"
             cross: "false"
             target: aarch64-unknown-linux-gnu