diff --git a/ci/test/00_setup_env_native_asan.sh b/ci/test/00_setup_env_native_asan.sh
index d7ff7c2c138..c59a506a719 100755
--- a/ci/test/00_setup_env_native_asan.sh
+++ b/ci/test/00_setup_env_native_asan.sh
@@ -19,7 +19,7 @@ else
 fi
 
 export CONTAINER_NAME=ci_native_asan
-export APT_LLVM_V="19"
+export APT_LLVM_V="20"
 export PACKAGES="systemtap-sdt-dev clang-${APT_LLVM_V} llvm-${APT_LLVM_V} libclang-rt-${APT_LLVM_V}-dev python3-zmq qtbase5-dev qttools5-dev qttools5-dev-tools libevent-dev libboost-dev libdb5.3++-dev libzmq3-dev libqrencode-dev libsqlite3-dev ${BPFCC_PACKAGE}"
 export NO_DEPENDS=1
 export GOAL="install"
diff --git a/ci/test/00_setup_env_native_fuzz.sh b/ci/test/00_setup_env_native_fuzz.sh
index 597e2401a20..1b5a27bb6cd 100755
--- a/ci/test/00_setup_env_native_fuzz.sh
+++ b/ci/test/00_setup_env_native_fuzz.sh
@@ -8,7 +8,7 @@ export LC_ALL=C.UTF-8
 
 export CI_IMAGE_NAME_TAG="docker.io/ubuntu:24.04"
 export CONTAINER_NAME=ci_native_fuzz
-export APT_LLVM_V="19"
+export APT_LLVM_V="20"
 export PACKAGES="clang-${APT_LLVM_V} llvm-${APT_LLVM_V} libclang-rt-${APT_LLVM_V}-dev libevent-dev libboost-dev libsqlite3-dev"
 export NO_DEPENDS=1
 export RUN_UNIT_TESTS=false
diff --git a/ci/test/00_setup_env_native_tsan.sh b/ci/test/00_setup_env_native_tsan.sh
index d82dda344fe..988107e7fb4 100755
--- a/ci/test/00_setup_env_native_tsan.sh
+++ b/ci/test/00_setup_env_native_tsan.sh
@@ -8,7 +8,7 @@ export LC_ALL=C.UTF-8
 
 export CONTAINER_NAME=ci_native_tsan
 export CI_IMAGE_NAME_TAG="docker.io/ubuntu:24.04"
-export APT_LLVM_V="19"
+export APT_LLVM_V="20"
 export PACKAGES="clang-${APT_LLVM_V} llvm-${APT_LLVM_V} libclang-rt-${APT_LLVM_V}-dev libc++abi-${APT_LLVM_V}-dev libc++-${APT_LLVM_V}-dev python3-zmq"
 export DEP_OPTS="CC=clang-${APT_LLVM_V} CXX='clang++-${APT_LLVM_V} -stdlib=libc++'"
 export GOAL="install"
diff --git a/ci/test/01_base_install.sh b/ci/test/01_base_install.sh
index a46f9ffabbe..e1acc40708c 100755
--- a/ci/test/01_base_install.sh
+++ b/ci/test/01_base_install.sh
@@ -49,7 +49,7 @@ if [ -n "$PIP_PACKAGES" ]; then
 fi
 
 if [[ ${USE_MEMORY_SANITIZER} == "true" ]]; then
-  ${CI_RETRY_EXE} git clone --depth=1 https://github.com/llvm/llvm-project -b "llvmorg-19.1.6" /msan/llvm-project
+  ${CI_RETRY_EXE} git clone --depth=1 https://github.com/llvm/llvm-project -b "llvmorg-20.1.0-rc1" /msan/llvm-project
 
   cmake -G Ninja -B /msan/clang_build/ \
     -DLLVM_ENABLE_PROJECTS="clang" \