diff --git a/.forgejo/workflows/ci.yml b/.forgejo/workflows/ci.yml
index 22a42c8..5d86aba 100644
--- a/.forgejo/workflows/ci.yml
+++ b/.forgejo/workflows/ci.yml
@@ -35,13 +35,15 @@ jobs:
         run: bun install
 
       - name: Run tests
-        run: bun test
-        env:
-          # Unit tests assume GitHub context. Override Forgejo runner's
-          # GITHUB_SERVER_URL so module-level constants (config.ts) and
-          # detectPlatform() default to GitHub. Forgejo-specific tests
-          # explicitly set PLATFORM=forgejo in their own beforeEach.
-          GITHUB_SERVER_URL: https://github.com
+        # Unit tests assume GitHub context. Override Forgejo runner's
+        # GITHUB_SERVER_URL so module-level constants (config.ts) and
+        # detectPlatform() default to GitHub. Forgejo-specific tests
+        # explicitly set PLATFORM=forgejo in their own beforeEach.
+        # Inline export because Forgejo runner re-injects GITHUB_SERVER_URL
+        # after step-level env:, overriding it.
+        run: |
+          export GITHUB_SERVER_URL=https://github.com
+          bun test
 
   prettier:
     runs-on: grunt