diff --git a/.devcontainer/py312/.devcontainer/devcontainer.json b/.devcontainer/py312/.devcontainer/devcontainer.json
index 76d67e74..49f3ee0f 100644
--- a/.devcontainer/py312/.devcontainer/devcontainer.json
+++ b/.devcontainer/py312/.devcontainer/devcontainer.json
@@ -6,7 +6,7 @@
         "args": {
             "NAME": "py_trees-312",
             "POETRY_VERSION": "1.8.4",
-            "PYTHON_VERSION": "3.12.8",
+            "PYTHON_VERSION": "3.12.4",
             "DEBIAN_VERSION": "bullseye"
         },
         "context": ".."
diff --git a/.github/workflows/push_poetry_container.yaml b/.github/workflows/push_poetry_container.yaml
index 98cdc83d..3bb7be1e 100644
--- a/.github/workflows/push_poetry_container.yaml
+++ b/.github/workflows/push_poetry_container.yaml
@@ -4,9 +4,9 @@ env:
   REGISTRY: ghcr.io
   IMAGE_NAME: ${{ github.repository }}-ci
   POETRY_VERSION: 1.3.2
-  PYTHON_PRIMARY_VERSION: 3.10.16
+  PYTHON_PRIMARY_VERSION: 3.10.15
   PYTHON_PRIMARY_TAG: py310
-  PYTHON_SECONDARY_VERSION: 3.12.8
+  PYTHON_SECONDARY_VERSION: 3.12.4
   PYTHON_SECONDARY_TAG: py312
   DEBIAN_VERSION: bullseye