diff --git a/hosts/tesla-nixos/configuration.nix b/hosts/tesla-nixos/configuration.nix
index 05d7cb2..4a01053 100644
--- a/hosts/tesla-nixos/configuration.nix
+++ b/hosts/tesla-nixos/configuration.nix
@@ -148,9 +148,9 @@
             dockerVolumes = [
               "/var/lib/gitlab-runner/cache:/cache"
             ];
-            environmentVariables = [
-              "DOCKER_HOST=unix:///run/user/2100/podman/podman.sock"
-            ];
+            environmentVariables = {
+              DOCKER_HOST = "unix:///run/user/2100/podman/podman.sock";
+            };
           }; # end services.ci-nspawn-rootless-podman
         }; # end services.gitlab-runner
       }; # end containers.ci.config