diff --git a/CMakeLists.txt b/CMakeLists.txt
index 25c1e7b..5b1c2ff 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -32,7 +32,7 @@ CPMAddPackage(
 
 CPMAddPackage(
         NAME GLAD
-        URL https://git.redacted.cc/Redacted/glad/archive/v2.1ext_fboV2.zip
+        URL https://git.redacted.cc/Redacted/glad/archive/v2.1ext_fbo_depthtexture_shadow.zip
 )
 
 CPMAddPackage(
diff --git a/src/JGL.cpp b/src/JGL.cpp
index ba59a91..502875b 100644
--- a/src/JGL.cpp
+++ b/src/JGL.cpp
@@ -64,6 +64,10 @@ namespace JGL {
             return false;
         if (!GLAD_GL_ARB_framebuffer_object)
             return false;
+        if (!GLAD_GL_ARB_depth_texture)
+            return false;
+        if (!GLAD_GL_ARB_shadow)
+            return false;
         return true;
     }