diff --git a/.cirrus.yml b/.cirrus.yml
index 5db906c3bd..5c319c08b7 100644
--- a/.cirrus.yml
+++ b/.cirrus.yml
@@ -243,10 +243,10 @@ task:
     FILE_ENV: "./ci/test/00_setup_env_native_tsan.sh"
 
 task:
-  name: '[MSan, depends] [focal]'
+  name: '[MSan, depends] [lunar]'
   << : *GLOBAL_TASK_TEMPLATE
   container:
-    image: ubuntu:focal
+    image: ubuntu:lunar
   env:
     << : *CIRRUS_EPHEMERAL_WORKER_TEMPLATE_ENV
     FILE_ENV: "./ci/test/00_setup_env_native_msan.sh"
diff --git a/ci/test/00_setup_env_native_fuzz_with_msan.sh b/ci/test/00_setup_env_native_fuzz_with_msan.sh
index 7886f6efc9..35a0de8034 100755
--- a/ci/test/00_setup_env_native_fuzz_with_msan.sh
+++ b/ci/test/00_setup_env_native_fuzz_with_msan.sh
@@ -6,14 +6,14 @@
 
 export LC_ALL=C.UTF-8
 
-export CI_IMAGE_NAME_TAG="ubuntu:20.04"
+export CI_IMAGE_NAME_TAG="ubuntu:23.04" # Version 23.04 will reach EOL in Jan 2024, and can be replaced by "ubuntu:24.04" (or anything else that ships the wanted clang version).
 LIBCXX_DIR="${BASE_SCRATCH_DIR}/msan/build/"
 export MSAN_FLAGS="-fsanitize=memory -fsanitize-memory-track-origins=2 -fno-omit-frame-pointer -g -O1 -fno-optimize-sibling-calls"
 LIBCXX_FLAGS="-nostdinc++ -stdlib=libc++ -L${LIBCXX_DIR}lib -lc++abi -I${LIBCXX_DIR}include -I${LIBCXX_DIR}include/c++/v1 -lpthread -Wl,-rpath,${LIBCXX_DIR}lib -Wno-unused-command-line-argument"
 export MSAN_AND_LIBCXX_FLAGS="${MSAN_FLAGS} ${LIBCXX_FLAGS}"
 
 export CONTAINER_NAME="ci_native_fuzz_msan"
-export PACKAGES="clang-12 llvm-12 cmake"
+export PACKAGES="clang-16 llvm-16 libclang-rt-16-dev cmake"
 # BDB generates false-positives and will be removed in future
 export DEP_OPTS="NO_BDB=1 NO_QT=1 CC='clang' CXX='clang++' CFLAGS='${MSAN_FLAGS}' CXXFLAGS='${MSAN_AND_LIBCXX_FLAGS}'"
 export GOAL="install"
diff --git a/ci/test/00_setup_env_native_msan.sh b/ci/test/00_setup_env_native_msan.sh
index 1f9209bafb..bdb9bd7b5d 100755
--- a/ci/test/00_setup_env_native_msan.sh
+++ b/ci/test/00_setup_env_native_msan.sh
@@ -6,14 +6,14 @@
 
 export LC_ALL=C.UTF-8
 
-export CI_IMAGE_NAME_TAG="ubuntu:20.04"
+export CI_IMAGE_NAME_TAG="ubuntu:23.04" # Version 23.04 will reach EOL in Jan 2024, and can be replaced by "ubuntu:24.04" (or anything else that ships the wanted clang version).
 LIBCXX_DIR="${BASE_SCRATCH_DIR}/msan/build/"
 export MSAN_FLAGS="-fsanitize=memory -fsanitize-memory-track-origins=2 -fno-omit-frame-pointer -g -O1 -fno-optimize-sibling-calls"
 LIBCXX_FLAGS="-nostdinc++ -stdlib=libc++ -L${LIBCXX_DIR}lib -lc++abi -I${LIBCXX_DIR}include -I${LIBCXX_DIR}include/c++/v1 -lpthread -Wl,-rpath,${LIBCXX_DIR}lib -Wno-unused-command-line-argument"
 export MSAN_AND_LIBCXX_FLAGS="${MSAN_FLAGS} ${LIBCXX_FLAGS}"
 
 export CONTAINER_NAME="ci_native_msan"
-export PACKAGES="clang-12 llvm-12 cmake"
+export PACKAGES="clang-16 llvm-16 libclang-rt-16-dev cmake"
 # BDB generates false-positives and will be removed in future
 export DEP_OPTS="NO_BDB=1 NO_QT=1 CC='clang' CXX='clang++' CFLAGS='${MSAN_FLAGS}' CXXFLAGS='${MSAN_AND_LIBCXX_FLAGS}'"
 export GOAL="install"
diff --git a/ci/test/01_base_install.sh b/ci/test/01_base_install.sh
index bc1f2bb915..67dd013f6f 100755
--- a/ci/test/01_base_install.sh
+++ b/ci/test/01_base_install.sh
@@ -48,12 +48,11 @@ if [ -n "$PIP_PACKAGES" ]; then
 fi
 
 if [[ ${USE_MEMORY_SANITIZER} == "true" ]]; then
-  update-alternatives --install /usr/bin/clang++ clang++ "$(which clang++-12)" 100
-  update-alternatives --install /usr/bin/clang clang "$(which clang-12)" 100
-  mkdir -p "${BASE_SCRATCH_DIR}"/msan/build/
-  git clone --depth=1 https://github.com/llvm/llvm-project -b llvmorg-12.0.0 "${BASE_SCRATCH_DIR}"/msan/llvm-project
-  cd "${BASE_SCRATCH_DIR}"/msan/build/ && cmake -DLLVM_ENABLE_PROJECTS='libcxx;libcxxabi' -DCMAKE_BUILD_TYPE=Release -DLLVM_USE_SANITIZER=MemoryWithOrigins -DCMAKE_C_COMPILER=clang -DCMAKE_CXX_COMPILER=clang++ -DLLVM_TARGETS_TO_BUILD=X86 ../llvm-project/llvm/
-  cd "${BASE_SCRATCH_DIR}"/msan/build/ && make "$MAKEJOBS" cxx
+  update-alternatives --install /usr/bin/clang++ clang++ "$(which clang++-16)" 100
+  update-alternatives --install /usr/bin/clang clang "$(which clang-16)" 100
+  git clone --depth=1 https://github.com/llvm/llvm-project -b llvmorg-16.0.1 "${BASE_SCRATCH_DIR}"/msan/llvm-project
+  cmake -B "${BASE_SCRATCH_DIR}"/msan/build/ -DLLVM_ENABLE_RUNTIMES='libcxx;libcxxabi' -DCMAKE_BUILD_TYPE=Release -DLLVM_USE_SANITIZER=MemoryWithOrigins -DCMAKE_C_COMPILER=clang -DCMAKE_CXX_COMPILER=clang++ -DLLVM_TARGETS_TO_BUILD=X86 -DLLVM_ENABLE_PER_TARGET_RUNTIME_DIR=OFF -S "${BASE_SCRATCH_DIR}"/msan/llvm-project/runtimes
+  make -C "${BASE_SCRATCH_DIR}"/msan/build/ "$MAKEJOBS"
 fi
 
 if [[ "${RUN_TIDY}" == "true" ]]; then