diff --git a/build/pkgs/zlib/checksums.ini b/build/pkgs/zlib/checksums.ini
index 5c0549d268c..96a34f32fcf 100644
--- a/build/pkgs/zlib/checksums.ini
+++ b/build/pkgs/zlib/checksums.ini
@@ -1,3 +1,4 @@
 tarball=zlib-VERSION.tar.gz
-sha1=e6d119755acdf9104d7ba236b1242696940ed6dd
-sha256=c3e5e9fdd5004dcb542feda5ee4f0ff0744628baf8ed2dd5d66f8ca1197cb1a1
+sha1=f535367b1a11e2f9ac3bec723fb007fbc0d189e5
+sha256=9a93b2b7dfdac77ceba5a558a580e74667dd6fede4585b91eefb60f03b72df23
+upstream_url=https://github.com/madler/zlib/releases/download/vVERSION/zlib-VERSION.tar.gz
diff --git a/build/pkgs/zlib/package-version.txt b/build/pkgs/zlib/package-version.txt
index 624c12b0260..3a3cd8cc8b0 100644
--- a/build/pkgs/zlib/package-version.txt
+++ b/build/pkgs/zlib/package-version.txt
@@ -1 +1 @@
-1.2.11.p0
+1.3.1