diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 96fc9d5a96a14a3a3c443bef21363ffe2490eed9..e9fef4dd94b9ba11583936f42f33bb7c7da8847f 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -4,6 +4,8 @@ stages:
   - build
 
 build-code:
+  variables:
+    CMAKE_TOOLCHAIN_FILE: "/emsdk/upstream/emscripten/cmake/Modules/Platform/Emscripten.cmake"
   stage: build
   script:
     - mkdir build