diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 47bc2de..867b20a 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -15,13 +15,12 @@ jobs:
       - uses: actions/setup-python@v5
         with:
           python-version: '3.11'
-      - name: Install and configure Poetry
-        uses: snok/install-poetry@v1
-        with:
-          version: 1.8.3
-          virtualenvs-create: false
-          virtualenvs-in-project: false
-          installer-parallel: true
+      - name: Install poetry
+        run: |
+          pip install poetry==1.8.4 &&
+          poetry config virtualenvs.create false &&
+          poetry config virtualenvs.in-project false &&
+          poetry config installer.parallel true
       - name: Restore dependencies
         run: poetry install --no-root
       - name: Extract functionInputSchema
diff --git a/Dockerfile b/Dockerfile
index ff7ca25..555dcd9 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,7 +2,7 @@
 FROM python:3.11-slim
 
 # We install poetry to generate a list of dependencies which will be required by our application
-RUN pip install poetry
+RUN pip install poetry==1.8.4
 
 # We set the working directory to be the /home/speckle directory; all of our files will be copied here.
 WORKDIR /home/speckle