diff --git a/.planning/config.json b/.planning/config.json
index ef6f605..c3906be 100644
--- a/.planning/config.json
+++ b/.planning/config.json
@@ -9,5 +9,10 @@
   "planning": {
     "commit_docs": true,
     "search_gitignored": false
+  },
+  "git": {
+    "branching_strategy": "milestone",
+    "phase_branch_template": "gsd/phase-{phase}-{slug}",
+    "milestone_branch_template": "gsd/{milestone}-{slug}"
   }
 }