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
  *------------------------------------------------------------------------*/
diff --git a/opengl/include/GLES2/gl2ext.h b/opengl/include/GLES2/gl2ext.h
index d8c9f41..de5d65a 100644
--- a/opengl/include/GLES2/gl2ext.h
+++ b/opengl/include/GLES2/gl2ext.h
@@ -146,6 +146,11 @@
 #define GL_INT_10_10_10_2_OES                                   0x8DF7
 #endif
 
+/* GL_OES_texture_external */
+#ifndef GL_TEXTURE_EXTERNAL_OES
+#define GL_TEXTURE_EXTERNAL_OES                                 0x8D65
+#endif
+
 /*------------------------------------------------------------------------*
  * AMD extension tokens
  *------------------------------------------------------------------------*/
@@ -541,6 +546,11 @@
 #define GL_OES_vertex_type_10_10_10_2 1
 #endif
 
+/* GL_OES_texture_external */
+#ifndef GL_OES_texture_external
+#define GL_OES_texture_external 1
+#endif
+
 /*------------------------------------------------------------------------*
  * AMD extension functions
  *------------------------------------------------------------------------*/