diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index c722802..5f9b802 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - run: cmake -S . -B build
+      - run: cmake -S . -B build -DCMAKE_BUILD_TYPE=Debug
       - run: cmake --build build
       - run: build/test
       - run: build/test_value
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 55a1138..48eacff 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -17,7 +17,7 @@ include(FetchContent)
 FetchContent_Declare(
   geometry-hpp
   GIT_REPOSITORY https://github.com/maplibre/geometry.hpp
-  GIT_TAG origin/main
+  GIT_TAG 1297004bd70ed281d0dc4ecac4fbc41b22e50030
   EXCLUDE_FROM_ALL
 )