diff --git a/.github/workflows/run-python-tests.yaml b/.github/workflows/run-python-tests.yaml
index cec6209..2bd5cfe 100644
--- a/.github/workflows/run-python-tests.yaml
+++ b/.github/workflows/run-python-tests.yaml
@@ -5,13 +5,13 @@ name: Run tests
 
 on:
   workflow_dispatch: # add run button in github
-#  push:
-#    branches-ignore:
-#      - gh-pages
-#      - 'dependabot/**'
-#  pull_request:
-#    branches-ignore:
-#      - gh-pages
+  push:
+    branches-ignore:
+      - gh-pages
+      - 'dependabot/**'
+  pull_request:
+    branches-ignore:
+      - gh-pages
 
 jobs:
   build:
diff --git a/requirements.txt b/requirements.txt
index b332934..5050fcd 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@
 #    uv pip compile pyproject.toml --resolver=backtracking --all-extras -o requirements.txt
 aiodns==3.2.0
     # via aiohttp
-aiohappyeyeballs==2.4.6
+aiohappyeyeballs==2.4.8
     # via aiohttp
 aiohttp==3.11.13
     # via hdx-resource-changedetection (pyproject.toml)
diff --git a/tests/test_headretrieval.py b/tests/test_headretrieval.py
new file mode 100755
index 0000000..904f692
--- /dev/null
+++ b/tests/test_headretrieval.py
@@ -0,0 +1,96 @@
+"""
+Unit tests for the retrieval class.
+
+"""
+
+from pytest_check import check
+
+from hdx.resource.changedetection.head_retrieval import HeadRetrieval
+
+
+class TestHeadRetrieve:
+    def test_retrieval(self):
+        url1 = "https://itcorp.com"
+        url2 = "https://github.com/mcarans/hdx-data-freshness/raw/d1616d76c3b6b8ef5029eb6964b93cde688efd53/tests/fixtures/day0/notfound"
+        url3 = "file://lala:10"
+        url4 = "https://ocha-dap.github.io/hdx-data-freshness/tests/fixtures/retrieve/COD_MOZ_Admin0.geojson"
+        url5 = "https://ocha-dap.github.io/hdx-data-freshness/tests/fixtures/retrieve/hotosm_nic_airports_lines_shp.zip"
+        url6 = "https://ocha-dap.github.io/hdx-data-freshness/tests/fixtures/retrieve/Dataset.csv"
+        url7 = "https://ocha-dap.github.io/hdx-data-freshness/tests/fixtures/retrieve/list_one.xls"
+        url8 = "https://ocha-dap.github.io/hdx-data-freshness/tests/fixtures/retrieve/ACLED-Country-Coverage-and-ISO-Codes_8.2019.xlsx"
+        url9 = "https://ocha-dap.github.io/hdx-data-freshness/tests/fixtures/retrieve/response.html"
+        urls = [
+            (url1, "1", "html"),
+            (url2, "2", "csv"),
+            (url3, "3", "csv"),
+            (url4, "4", "geojson"),
+            (url5, "5", "shp"),
+            (url6, "6", "csv"),
+            (url7, "7", "xls"),
+            (url8, "8", "xlsx"),
+            (url9, "9", "html"),
+            (url9, "10", "csv"),
+            (url9, "11", "xls"),
+        ]
+        result = HeadRetrieval(
+            "test",
+            {"itcorp.com", "github.com", "ocha-dap.github.io", "lala:10"},
+        ).retrieve(urls)
+        check.equal(
+            result["1"],
+            (
+                "859",
+                "Sat, 20 Dec 2014 12:44:12 GMT",
+                '"35b-50aa52ea9f4dc"',
+                200,
+            ),
+        )
+        check.equal(result["2"], (None, None, None, 404))
+        check.equal(result["3"], (None, None, None, -100))
+        check.equal(
+            result["4"],
+            (
+                "176643",
+                "Tue, 12 Mar 2024 03:15:06 GMT",
+                'W/"65efc8ba-91a08"',
+                200,
+            ),
+        )
+        check.equal(
+            result["5"],
+            ("8461", "Tue, 12 Mar 2024 03:15:06 GMT", '"65efc8ba-210d"', 200),
+        )
+        check.equal(
+            result["6"],
+            (
+                "11169",
+                "Tue, 12 Mar 2024 03:15:06 GMT",
+                'W/"65efc8ba-65e4"',
+                200,
+            ),
+        )
+        check.equal(
+            result["7"],
+            (
+                "81920",
+                "Tue, 12 Mar 2024 03:15:06 GMT",
+                '"65efc8ba-14000"',
+                200,
+            ),
+        )
+        check.equal(
+            result["8"],
+            ("20984", "Tue, 12 Mar 2024 03:15:06 GMT", '"65efc8ba-51f8"', 200),
+        )
+        check.equal(
+            result["9"],
+            ("871", "Tue, 12 Mar 2024 03:15:06 GMT", 'W/"65efc8ba-7e1"', 200),
+        )
+        check.equal(
+            result["10"],
+            ("871", "Tue, 12 Mar 2024 03:15:06 GMT", 'W/"65efc8ba-7e1"', 200),
+        )
+        check.equal(
+            result["11"],
+            ("871", "Tue, 12 Mar 2024 03:15:06 GMT", 'W/"65efc8ba-7e1"', 200),
+        )