diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 06d7b857d87ae162b0d33319ac88a8c950fa3bdc..186b6cad569d6ce7854c9370a6c0d6837b909e91 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,8 +1,9 @@
 image: debian:stretch
 
 before_script:
+  - dpkg --add-architecture i386
   - apt-get update
-  - apt-get install libx11-dev libc6-dev-i386 build-essential  -y
+  - apt-get install libx11-dev:i386 libc6-dev-i386 build-essential  -y
 
 smoke-test-by-make:
   stage: build