diff --git a/ci_build_images/msan.Dockerfile b/ci_build_images/msan.Dockerfile
index c06adf2f..b6cb3b11 100644
--- a/ci_build_images/msan.Dockerfile
+++ b/ci_build_images/msan.Dockerfile
@@ -60,7 +60,8 @@ ENV CFLAGS="-fno-omit-frame-pointer -O2 -g -fsanitize=memory"
 ENV CXXFLAGS="$CFLAGS"
 ENV LDFLAGS="-fsanitize=memory"
 
-RUN apt-get source gnutls28 \
+RUN . /etc/os-release \
+    && apt-get source gnutls28 \
     && mv gnutls28-*/* . \
     && mk-build-deps -it 'apt-get -o Debug::pkgProblemResolver=yes --no-install-recommends --yes' \
     && aclocal \
@@ -109,7 +110,8 @@ RUN apt-get source gnutls28 \
 ENV CFLAGS="$CFLAGS -Wno-conversion"
 ENV CXXFLAGS="$CFLAGS"
 
-RUN apt-get source cracklib2 \
+RUN . /etc/os-release \
+    && apt-get source cracklib2 \
     && mv cracklib2-*/* . \
     && mk-build-deps -it 'apt-get -o Debug::pkgProblemResolver=yes --no-install-recommends --yes' \
     && if [ "${VERSION_CODENAME}" = "bookworm" ]; then \