diff --git a/NEWS.md b/NEWS.md
index 0e05f1dc09..157801a9c5 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -97,6 +97,7 @@ The following default gems are updated.
 * optparse 0.6.0
 * ostruct 0.6.1
 * pathname 0.4.0
+* pp 0.6.0
 * prism 1.0.0
 * pstore 0.1.4
 * psych 5.2.0