diff --git a/ci/build.linux.gitlab-ci.yml b/ci/build.linux.gitlab-ci.yml
index f965c02f9..8f6490cf5 100644
--- a/ci/build.linux.gitlab-ci.yml
+++ b/ci/build.linux.gitlab-ci.yml
@@ -131,10 +131,10 @@ build:linux:cross:x86-64:clang-19:default:asan-ubsan:
   extends: .build:linux:cross:x86-64
   image: ubuntu:24.04
   variables:
-    EIGEN_CI_INSTALL: clang-19
+    EIGEN_CI_INSTALL: clang-19 libclang-rt-19-dev
     EIGEN_CI_C_COMPILER: clang-19
     EIGEN_CI_CXX_COMPILER: clang++-19
-    EIGEN_CI_CROSS_INSTALL: g++-14-x86-64-linux-gnu clang-19
+    EIGEN_CI_CROSS_INSTALL: g++-14-x86-64-linux-gnu clang-19 libclang-rt-19-dev
     EIGEN_CI_ADDITIONAL_ARGS: >-
       -DEIGEN_TEST_CUSTOM_CXX_FLAGS=-fsanitize=address,undefined;-fno-omit-frame-pointer;-fno-sanitize-recover=undefined
       -DEIGEN_TEST_CUSTOM_LINKER_FLAGS=-fsanitize=address,undefined