diff --git a/src/plugins/ci.jl b/src/plugins/ci.jl
index 2159fa14..bce9485e 100644
--- a/src/plugins/ci.jl
+++ b/src/plugins/ci.jl
@@ -303,6 +303,7 @@ See [`Documenter`](@ref) for more information.
 @plugin struct GitLabCI <: FilePlugin
     file::String = default_file("gitlab-ci.yml")
     coverage::Bool = true
+    file_prefix::String = ""
     # Nightly has no Docker image.
     extra_versions::Vector = DEFAULT_CI_VERSIONS_NO_NIGHTLY
 end
@@ -335,6 +336,7 @@ function view(p::GitLabCI, t::Template, pkg::AbstractString)
         "USER" => t.user,
         "VERSION" => format_version(t.julia),
         "VERSIONS" => collect_versions(t, p.extra_versions),
+        "FILE_PREFIX" => p.file_prefix,
     )
 end
 
diff --git a/templates/gitlab-ci.yml b/templates/gitlab-ci.yml
index 44e50172..28dec1ce 100644
--- a/templates/gitlab-ci.yml
+++ b/templates/gitlab-ci.yml
@@ -1,3 +1,4 @@
+{{{FILE_PREFIX}}}
 .script:
   script:
     - |
diff --git a/test/reference.jl b/test/reference.jl
index baa42b36..65f314ad 100644
--- a/test/reference.jl
+++ b/test/reference.jl
@@ -130,7 +130,7 @@ end
             DroneCI(; amd64=false, arm=true, arm64=true, extra_versions=["1.3"]),
             Git(; ignore=["a", "b", "c"], manifest=true, branch="whackybranch"),
             GitHubActions(; x86=true, linux=false, coverage=false),
-            GitLabCI(; coverage=false, extra_versions=[v"0.6"]),
+            GitLabCI(; coverage=false, extra_versions=[v"0.6"], file_prefix=""),
             License(; name="ISC"),
             PkgEvalBadge(),
             ProjectFile(; version=v"1"),