diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 4b62d62..48dc92f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -26,10 +26,13 @@ jobs:
         uses: actions/checkout@v2
       -
         name: Test test key and passphrase
+        uses: actions/github-script@0.9.0
         id: test
-        run: |
-          echo ::set-output name=pgp::$(cat .github/test-key.pgp)
-          echo ::set-output name=passphrase::$(cat .github/test-key.pass)
+        with:
+          script: |
+            import fs = require('fs');
+            core.setOutput('pgp', fs.readFileSync('.github/test-key.pgp', {encoding: 'utf8'}));
+            core.setOutput('passphrase', fs.readFileSync('.github/test-key.pass', {encoding: 'utf8'}));
       -
         name: Import GPG private key
         id: import_gpg