diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index c70fd64..219176f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -26,7 +26,7 @@ jobs:
           distribution: "zulu"
           java-version: "11"
       - name: Install Hooktest
-        run: pip3 install HookTest
+        run: pip3 install "HookTest<2.0"
       - name: Run Hooktest
         run:  hooktest --console --scheme auto --guidelines 2.epidoc --workers 3 --verbose 7 --manifest --countword ./
       # Include manifest.txt as a job artifact so we can re-use it when creating the release.