diff --git a/package_versions.txt b/package_versions.txt
index 136ba93d..fc041d83 100755
--- a/package_versions.txt
+++ b/package_versions.txt
@@ -236,5 +236,5 @@ xterm-371-r0
 xz-5.2.5-r1
 xz-libs-5.2.5-r1
 yajl-2.1.0-r2
-zlib-1.2.12-r0
+zlib-1.2.12-r1
 zstd-libs-1.5.0-r0