diff --git a/.github/workflows/check_types.yml b/.github/workflows/check_types.yml
index b53b948..e3c1746 100644
--- a/.github/workflows/check_types.yml
+++ b/.github/workflows/check_types.yml
@@ -19,7 +19,7 @@ jobs:
       fail-fast: true
       matrix:
         python-version: ["3.11"]
-        poetry-version: ["latest"]
+        poetry-version: ["1.8.5"]
         os: [ubuntu-latest]
     runs-on: ${{ matrix.os }}
     steps:
diff --git a/.github/workflows/on_schedule_update_dependencies.yml b/.github/workflows/on_schedule_update_dependencies.yml
index e752784..296ca7c 100644
--- a/.github/workflows/on_schedule_update_dependencies.yml
+++ b/.github/workflows/on_schedule_update_dependencies.yml
@@ -12,7 +12,7 @@ jobs:
       fail-fast: true
       matrix:
         python-version: ["3.11"]
-        poetry-version: ["latest"]
+        poetry-version: ["1.8.5"]
         os: [ubuntu-latest]
     runs-on: ${{ matrix.os }}
     permissions: