diff --git a/Makefile b/Makefile
index bf9d9bd1..d1d1711d 100644
--- a/Makefile
+++ b/Makefile
@@ -2,7 +2,10 @@ gen-changelog:
 	npx auto-changelog --unreleased
 
 run-all:
-	curl -o ./priv/openapi/spec3.sdk.json https://raw.githubusercontent.com/stripe/openapi/master/openapi/spec3.sdk.json
+	@$(eval LATEST_TAG=$(shell curl -s https://api.github.com/repos/stripe/openapi/releases/latest | jq -r '.tag_name'))
+	@echo "Latest tag: $(LATEST_TAG)"
+	@echo "Downloading https://raw.githubusercontent.com/stripe/openapi/$(LATEST_TAG)/openapi/spec3.sdk.json to ./priv/openapi/spec3.sdk.json"
+	@curl -o ./priv/openapi/spec3.sdk.json https://raw.githubusercontent.com/stripe/openapi/$(LATEST_TAG)/openapi/spec3.sdk.json
 	mix stripe.generate
 	mix format
 	SKIP_STRIPE_MOCK_RUN=true mix test