diff --git a/.github/CODEOWNERS b/.github/CODEOWNERS
index 88e3ea2ba5..24a1a46a6e 100644
--- a/.github/CODEOWNERS
+++ b/.github/CODEOWNERS
@@ -1,9 +1,15 @@
 * @tschaffter
 
+# Repository administration
+/.devcontainer @tschaffter
+/.github @tschaffter
+/.vscode @tschaffter
+/.yarn @tschaffter
+
+# OpenChallenges
 /apps/openchallenges/ @rrchai @tschaffter @vpchung
 /libs/openchallenges/ @rrchai @tschaffter @vpchung
 
-# OpenChallenges
 ## DB content
 /apps/openchallenges/challenge-service/src/main/resources/db/     @tschaffter @vpchung @gaiaandreoletti
 /apps/openchallenges/organization-service/src/main/resources/db/  @tschaffter @vpchung @gaiaandreoletti
diff --git a/tools/devcontainers/sage/.devcontainer/Dockerfile b/tools/devcontainers/sage/.devcontainer/Dockerfile
index 4151764390..b3d23383ce 100644
--- a/tools/devcontainers/sage/.devcontainer/Dockerfile
+++ b/tools/devcontainers/sage/.devcontainer/Dockerfile
@@ -1,4 +1,4 @@
-ARG imageVersion=jammy-20230624
+ARG imageVersion=jammy-20240227
 FROM ubuntu:$imageVersion
 
 # Safer bash scripts with 'set -euxo pipefail'
@@ -16,7 +16,7 @@ ARG yarnVersion="3.6.1"
 # https://www.npmjs.com/package/@devcontainers/cli
 ARG devcontainerCliVersion="0.50.2"
 # https://pypi.org/project/poetry
-ARG poetryVersion="1.6.1"
+ARG poetryVersion="1.8.2"
 # https://docs.posit.co/resources/install-r/#specify-r-version
 ARG rVersion="4.2.3"
 # https://aquasecurity.github.io/trivy
@@ -184,7 +184,7 @@ ENV PYENV_ROOT /home/${user}/.pyenv
 ENV PATH $PYENV_ROOT/shims:$PYENV_ROOT/bin:$PATH
 RUN pyenv install \
   3.9.2 \
-  3.10.6 \
-  3.11.0
+  3.10.14 \
+  3.11.8
 
 CMD ["bash"]
\ No newline at end of file