diff --git a/.github/workflows/manual-publish.yml b/.github/workflows/manual-publish.yml
index c7dd93d..996e017 100644
--- a/.github/workflows/manual-publish.yml
+++ b/.github/workflows/manual-publish.yml
@@ -24,6 +24,8 @@ jobs:
 
       - name: Install poetry
         uses: abatilo/actions-poetry@7b6d33e44b4f08d7021a1dee3c044e9c253d6439
+        with:
+          poetry-version: "1.8.5"
 
       - uses: launchdarkly/gh-actions/actions/release-secrets@release-secrets-v1.2.0
         name: 'Get PyPI token'
diff --git a/.github/workflows/release-please.yml b/.github/workflows/release-please.yml
index 5a9e34e..1263eaf 100644
--- a/.github/workflows/release-please.yml
+++ b/.github/workflows/release-please.yml
@@ -29,6 +29,8 @@ jobs:
       - name: Install poetry
         if: ${{ steps.release.outputs.releases_created == 'true' }}
         uses: abatilo/actions-poetry@7b6d33e44b4f08d7021a1dee3c044e9c253d6439
+        with:
+          poetry-version: "1.8.5"
 
       - uses: launchdarkly/gh-actions/actions/release-secrets@release-secrets-v1.2.0
         if: ${{ steps.release.outputs.releases_created == 'true' }}