diff --git a/doc/useful.md b/doc/useful.md
index 55ef05e7..d6a39565 100644
--- a/doc/useful.md
+++ b/doc/useful.md
@@ -1,7 +1,6 @@
 Useful Resources:
 * Latest Blender API: https://docs.blender.org/api/current/
-* https://docs.blender.org/api/2.79/info_tips_and_tricks.html
-* https://www.blender.org/api/blender_python_api_2_77_release/bpy.types.RenderEngine.html?
+* https://docs.blender.org/api/current/info_tips_and_tricks.html
 
 #### Interactive debugging