diff --git a/Libraries/LibWeb/WebGL/Types.idl b/Libraries/LibWeb/WebGL/Types.idl
index 9dbb3e229b5..f1d662d63bd 100644
--- a/Libraries/LibWeb/WebGL/Types.idl
+++ b/Libraries/LibWeb/WebGL/Types.idl
@@ -10,3 +10,6 @@ typedef long long GLsizeiptr;
 typedef unrestricted float GLfloat;
 typedef unrestricted float GLclampf;
 
+// WebGL 2.0
+typedef long long GLint64;
+typedef unsigned long long GLuint64;