diff --git a/.env b/.env
index dd9a881..c0eee6f 100644
--- a/.env
+++ b/.env
@@ -107,6 +107,11 @@ CF_API_TOKEN=cfut_ijIT9HDjXWKgd0dtnyLqxv8L3deB7hSDivSqquwp905a6c51
 # GitHub Actions self-hosted runner (fine-grained PAT, Administration:write on homelabstack)
 GITHUB_RUNNER_ACCESS_TOKEN=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
 
+# Portainer git-stack auth (fine-grained PAT, Contents:read on homelabstack)
+# Used by StackCreateDockerStandaloneRepository when registering new stacks.
+# Runner PAT above does NOT work for this — different scopes.
+GITHUB_STACKS_PAT=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
+
 # =============================================================
 # DEV STACK
 # =============================================================