diff --git a/doc/extra-intersphinx.txt b/doc/extra-intersphinx.txt
index 676c4b7fd7e64d84246b0eaeabdf3fae5a8a095f..9c34975adc4e620d2baeb39c9414edb1656d81c3 100644
--- a/doc/extra-intersphinx.txt
+++ b/doc/extra-intersphinx.txt
@@ -1 +1,2 @@
 bob.bio.base
+bob.ip.skincolorfilter