diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 4b82f5e..54dcf58 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -33,7 +33,7 @@ jobs:
 
     - name: Install dependencies
       run: |
-        python -m pip install poetry
+        python -m pip install poetry==1.8.4
         poetry lock --no-update
         poetry install -E dev -E rnn -E visuals
     - name: Verify that we can build the package