diff --git a/package_versions.txt b/package_versions.txt
index 3134da6..d756bd6 100755
--- a/package_versions.txt
+++ b/package_versions.txt
@@ -105,4 +105,4 @@ x265-libs-3.5-r0
 xvidcore-1.3.7-r1
 xz-5.2.5-r1
 xz-libs-5.2.5-r1
-zlib-1.2.12-r0
+zlib-1.2.12-r1