diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
new file mode 100644
index 00000000..0c9b7871
--- /dev/null
+++ b/.github/workflows/test.yml
@@ -0,0 +1,47 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+#
+---
+name: pytest
+
+on:
+  pull_request:
+    branches: ['main']
+
+permissions:
+  contents: read
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
+
+      - name: Set up Python environment
+        uses: actions/setup-python@v5
+
+      - name: Install dependencies
+        run: |
+          pip install pyaml pytest
+
+      - name: Run tests
+        run: |
+          pytest
+        env:
+          GH_TOKEN: ${{ github.token }}
diff --git a/gateway/test_gateway.py b/gateway/test_gateway.py
index 74badb76..885e8f04 100644
--- a/gateway/test_gateway.py
+++ b/gateway/test_gateway.py
@@ -38,7 +38,7 @@ def test_update_refs():
         },
         "dorny/paths-filter": {
             "0bc4621a3135347011ad047f9ecf449bf72ce2bd": {
-                "expires_at": calculate_expiry()
+                "expires_at": calculate_expiry(12)
             },
             "de90cc6fb38fc0963ad72b210f1f284cd68cea36": {
                 "expires_at": datetime.date(2100, 1, 1),
diff --git a/stash/restore/test_get_stash.py b/stash/restore/test_get_stash.py
index d638b0ba..c8e1a575 100644
--- a/stash/restore/test_get_stash.py
+++ b/stash/restore/test_get_stash.py
@@ -14,6 +14,7 @@
 
 import unittest
 import json
+import os
 
 from get_stash import ensure_json, gh_api, jq
 
@@ -23,7 +24,8 @@ def test_jq(self):
         self.assertEqual(jq('{"a": 1}', ".a", ["-j"]).stdout, "1")
 
     def test_jq_file(self):
-        self.assertEqual(jq("test.json", ".a").stdout, "1\n")
+        this_dir = os.path.dirname(os.path.realpath(__file__))
+        self.assertEqual(jq(this_dir + "/test.json", ".a").stdout, "1\n")
 
     def test_jq_error(self):
         with self.assertRaises(ValueError):