diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 8dd178208b6b..c0a7b1d70216 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -10,7 +10,7 @@ build:
 
   script:
     - mkdir build
-    - cd build
-    - cmake ../runtimes -G Ninja -DLLVM_ENABLE_RUNTIMES="libcxx;libcxxabi;libunwind" -DCMAKE_C_COMPILER="$(which clang)" -DCMAKE_CXX_COMPILER="$(which clang++)"
-    - ninja cxx-test-depends
-    - bin/llvm-lit -sv libcxx/test/std/experimental/simd
+    - cmake -G Ninja -S llvm -B build -DLLVM_ENABLE_PROJECTS="clang" -DLLVM_ENABLE_RUNTIMES="libcxx;libcxxabi;libunwind" -DLLVM_RUNTIME_TARGETS="x86_64-unknown-linux-gnu"
+    - ninja -C build runtimes
+    - ninja -C build runtimes-test-depends
+    - build/bin/llvm-lit -sv build/runtimes/runtimes-x86_64-unknown-linux-gnu-bins/libcxx/test/std/experimental/simd/