diff --git a/.gitmodules b/.gitmodules
index 7d3ef24..8ac527f 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -4,3 +4,6 @@
 [submodule "lib/glfw"]
 	path = lib/glfw
 	url = https://github.com/glfw/glfw
+[submodule "lib/glm"]
+	path = lib/glm
+	url = https://github.com/g-truc/glm
diff --git a/lib/glm b/lib/glm
new file mode 160000
index 0000000..947527d
--- /dev/null
+++ b/lib/glm
@@ -0,0 +1 @@
+Subproject commit 947527d3ac1910e62d142c76480293fee460603d