diff --git a/spec/system/admin_update_spec.rb b/spec/system/admin_update_spec.rb
index 6b9f883..4be8e3d 100644
--- a/spec/system/admin_update_spec.rb
+++ b/spec/system/admin_update_spec.rb
@@ -5,7 +5,15 @@
 RSpec.describe "Admin update" do
   fab!(:admin)
 
-  before { sign_in(admin) }
+  before do
+    sign_in(admin)
+
+    # Avoid running `git` for every repo on every request
+    DockerManager::GitRepo.any_instance.stubs(:latest_origin_commit).returns("a" * 40)
+    DockerManager::GitRepo.any_instance.stubs(:latest_origin_tag_version).returns(nil)
+    DockerManager::GitRepo.any_instance.stubs(:commits_behind).returns(0)
+    DockerManager::GitRepo.any_instance.stubs(:latest_origin_commit_date).returns(Time.current)
+  end
 
   it "displays the admin update page with the right repositories" do
     visit("/admin/update")