diff --git a/.github/workflows/ci-workflow.yml b/.github/workflows/ci-workflow.yml
index 7378874a1ab..5d2bae8fee6 100644
--- a/.github/workflows/ci-workflow.yml
+++ b/.github/workflows/ci-workflow.yml
@@ -930,7 +930,7 @@ jobs:
 
       - name: Extension test
         run: |
-          python3 scripts/generate-tinysnb.py
+          python3 scripts/generate-tinysnb.py debug
           cd scripts/ && python3 http-server.py &
           make extension-test
 
diff --git a/Makefile b/Makefile
index e866ab8a729..5a1ddcb61e2 100644
--- a/Makefile
+++ b/Makefile
@@ -187,7 +187,7 @@ example:
 	$(call run-cmake-release, -DBUILD_EXAMPLES=TRUE)
 
 extension-test-build:
-	$(call run-cmake-relwithdebinfo, \
+	$(call run-cmake-debug, \
 		-DBUILD_EXTENSIONS="httpfs;duckdb;json;postgres;sqlite;fts;delta;iceberg" \
 		-DBUILD_EXTENSION_TESTS=TRUE \
 		-DBUILD_TESTS=TRUE \
diff --git a/scripts/generate-tinysnb.py b/scripts/generate-tinysnb.py
index f6b15bf531e..92b61b28194 100644
--- a/scripts/generate-tinysnb.py
+++ b/scripts/generate-tinysnb.py
@@ -10,6 +10,8 @@
 # Define the build type from input
 if len(sys.argv) > 1 and sys.argv[1].lower() == "release":
     build_type = "release"
+elif len(sys.argv) > 1 and sys.argv[1].lower() == "debug":
+    build_type = "debug"
 else:
     build_type = "relwithdebinfo"