diff --git a/.github/workflows/match.yml b/.github/workflows/match.yml
index 102d181..1767da8 100644
--- a/.github/workflows/match.yml
+++ b/.github/workflows/match.yml
@@ -44,7 +44,7 @@ jobs:
       - name: Format generated files
         run: bun run format
 
-      - name: Create Pull Request
+      - name: Create and merge Pull Request
         env:
           GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         run: |
@@ -56,4 +56,7 @@ jobs:
           git diff --staged --quiet && exit 0
           git commit -m "chore: update match history"
           git push -u origin "$BRANCH_NAME"
-          gh pr create --fill --body "자동 생성된 커피챗 매칭 히스토리 업데이트입니다."
+          PR_URL=$(gh pr create --fill --body "자동 생성된 커피챗 매칭 히스토리 업데이트입니다.")
+          # 다음 매칭 cron 전에 history가 main에 반영되도록 즉시 머지한다.
+          # 머지가 지연되면 stale history로 인해 재매칭/동일매칭이 발생한다.
+          gh pr merge "$PR_URL" --squash --delete-branch
diff --git a/data/coffee-ui/history.json b/data/coffee-ui/history.json
index 32b914e..adf7a70 100644
--- a/data/coffee-ui/history.json
+++ b/data/coffee-ui/history.json
@@ -74,14 +74,6 @@
 				["299178466996256778", "701107097659506699"],
 				["913798074957172777", "960173224937812099"]
 			]
-		},
-		{
-			"date": "2026-06-29",
-			"pairs": [
-				["267646459187298305", "1065143836562698291", "840925933538902016"],
-				["960173224937812099", "913798074957172777"],
-				["299178466996256778", "701107097659506699"]
-			]
 		}
 	]
 }
diff --git a/data/coffee/history.json b/data/coffee/history.json
index 44eafc6..264309b 100644
--- a/data/coffee/history.json
+++ b/data/coffee/history.json
@@ -178,13 +178,6 @@
 				],
 				["1351517352356876342", "710532131171860510", "857282069994799105"]
 			]
-		},
-		{
-			"date": "2026-06-29",
-			"pairs": [
-				["710532131171860510", "748456575655739432", "267646459187298305"],
-				["432043985335222284", "1351517352356876342", "857282069994799105"]
-			]
 		}
 	]
 }