diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index b69c8c521e31d6540af5a57ac66276d5d7bbd594..4c8e48221f857e9a3a254dc457e0eb78f087b701 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -3,12 +3,12 @@ linux-runner:
     - linux
   before_script:
     - apt-get update -qq && apt-get install -y wget bzip2 make gcc gcc-multilib time bc git
-    - wget -nv https://common-lisp.net/project/cmucl/downloads/snapshots/2017/10/cmucl-2017-10-x86-linux.tar.bz2
-    - wget -nv https://common-lisp.net/project/cmucl/downloads/snapshots/2017/10/cmucl-2017-10-x86-linux.extra.tar.bz2
+    - wget -nv https://common-lisp.net/project/cmucl/downloads/release/21c/cmucl-21c-x86-linux.tar.bz2
+    - wget -nv https://common-lisp.net/project/cmucl/downloads/release/21c/cmucl-21c-x86-linux.extra.tar.bz2
     - mkdir snapshot
-    - (cd snapshot; tar xjf ../cmucl-2017-10-x86-linux.tar.bz2; tar xjf ../cmucl-2017-10-x86-linux.extra.tar.bz2)
+    - (cd snapshot; tar xjf ../cmucl-21c-x86-linux.tar.bz2; tar xjf ../cmucl-21c-x86-linux.extra.tar.bz2)
   script:
-    - bin/build.sh -B boot-21c -C "" -o ./snapshot/bin/lisp
+    - bin/build.sh -C "" -o ./snapshot/bin/lisp
     - bin/make-dist.sh -I dist linux-4
     - bin/run-tests.sh -l dist/bin/lisp 2>&1 | tee test.log