diff --git a/src/shape.cpp b/src/shape.cpp
index 3f6d4cb..5aa51b8 100644
--- a/src/shape.cpp
+++ b/src/shape.cpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Weffc++"
 #include <glm/ext/matrix_transform.hpp>
+#define GLM_ENABLE_EXPERIMENTAL
 #include <glm/gtx/matrix_transform_2d.hpp>
 #pragma GCC diagnostic pop
 
diff --git a/third_party/glm b/third_party/glm
index efec5db..673a963 160000
--- a/third_party/glm
+++ b/third_party/glm
@@ -1 +1 @@
-Subproject commit efec5db081e3aad807d0731e172ac597f6a39447
+Subproject commit 673a963a0f1eb82f5fcef00b7b873371555e5814