diff --git a/common/makefiles/javadoc/CORE_PKGS.gmk b/common/makefiles/javadoc/CORE_PKGS.gmk
index e292869f951e4ab1046f591e8bfd012c2dc714a1..dcfda026ded9d0b9693e368fda5f02869db63819 100644
--- a/common/makefiles/javadoc/CORE_PKGS.gmk
+++ b/common/makefiles/javadoc/CORE_PKGS.gmk
@@ -131,6 +131,7 @@ CORE_PKGS =                                      \
   java.util.concurrent                           \
   java.util.concurrent.atomic                    \
   java.util.concurrent.locks                     \
+  java.util.function                             \
   java.util.jar                                  \
   java.util.logging                              \
   java.util.prefs                                \