diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index f9a1a62b8..aa504e57d 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -97,7 +97,7 @@ frontend build:
 backend lint:
   stage: lint
   script:
-    - "nix shell .#gnumake .#stack --command make CI=1 backend-lint"
+    - "nix shell .#gnumake .#coreutils .#stack --command make CI=1 backend-lint"
   before_script: *nix-before
   retry: 2
   interruptible: true
@@ -112,7 +112,7 @@ backend build:
         - .stack-work/
 
   script:
-    - "nix shell .#gnumake .#stack --command make CI=1 backend-build"
+    - "nix shell .#gnumake .#coreutils .#stack --command make CI=1 backend-build"
     - cp $(stack path --dist-dir)/build/hlint/hlint bin/test-hlint
     - cp $(stack path --dist-dir)/build/yesod/yesod bin/test-yesod
   before_script: *nix-before