diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index df1f0f5a..0344de58 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -188,7 +188,10 @@ qemuarm-secureboot:
   parallel:
     matrix:
       - KERNEL: [linux-yocto, linux-yocto-dev, linux-yocto-rt]
-        TOOLCHAINS: [gcc, clang, external-gccarm]
+        TOOLCHAINS: [gcc, clang]
+        TCLIBC: [glibc, musl]
+        TESTING: testimage
+      - TOOLCHAINS: external-gccarm
         TESTING: testimage
 
 qemuarm: