diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index ee4f281e..3684ab60 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -148,10 +148,8 @@ jobs:
         run: sudo apt-get install -y jq
 
       - name: Generate Release Notes
-        env:
-          ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
         run: |
-          make generate-notes VERSION_OLD=${{ needs.update_version.outputs.previous_version }} VERSION_NEW=${{ github.ref_name }} > release_notes.md
+          make generate-notes VERSION_OLD=${{ needs.update_version.outputs.previous_version }} VERSION_NEW=${{ github.ref_name }} ANTHROPIC_API_KEY=${{ secrets.ANTHROPIC_API_KEY }} > release_notes.md
 
       - name: Update Release Notes
         uses: softprops/action-gh-release@v2
diff --git a/Makefile b/Makefile
index 1c626630..5bd8c8a4 100644
--- a/Makefile
+++ b/Makefile
@@ -25,7 +25,7 @@ HTTPS_PROXY = http://172.17.0.1:1081
 # Variables to hold version tags and contributor names
 VERSION_OLD ?=
 VERSION_NEW ?=
-CONTRIBUTORS ?=
+CONTRIBUTORS ?= $(shell git log --pretty=format:'%an' $(VERSION_OLD)..$(VERSION_NEW) | sort | uniq)
 
 # Claude API settings
 CLAUDE_MODEL ?= claude-3-5-sonnet-20241022
@@ -103,9 +103,6 @@ ifndef VERSION_NEW
 	@echo "Error: VERSION_NEW is not set"
 	@exit 1
 endif
-ifndef CONTRIBUTORS
-	@echo "Warning: CONTRIBUTORS not set. Continuing without contributors."
-endif
 ifndef ANTHROPIC_API_KEY
 	@echo "Error: ANTHROPIC_API_KEY is not set"
 	@exit 1