diff --git a/opengl/include/GLES/glext.h b/opengl/include/GLES/glext.h
index 9596148..a5b3ead 100644
--- a/opengl/include/GLES/glext.h
+++ b/opengl/include/GLES/glext.h
@@ -211,6 +211,11 @@
 #define GL_VERTEX_ARRAY_BINDING_OES                             0x85B5
 #endif
 
+/* GL_OES_texture_external */
+#ifndef GL_TEXTURE_EXTERNAL_OES
+#define GL_TEXTURE_EXTERNAL_OES                                 0x8D65
+#endif
+
 /*------------------------------------------------------------------------*
  * AMD extension tokens
  *------------------------------------------------------------------------*/
@@ -777,6 +782,11 @@
 typedef GLboolean (GL_APIENTRYP PFNGLISVERTEXARRAYOESPROC) (GLuint array);
 #endif
 
+/* GL_OES_texture_external */
+#ifndef GL_OES_texture_external
+#define GL_OES_texture_external 1
+#endif
+
 /*------------------------------------------------------------------------*
  * AMD extension functions
  *------------------------------------------------------------------------*/