diff --git a/bin/compile b/bin/compile
index fa03d31..f7f1869 100755
--- a/bin/compile
+++ b/bin/compile
@@ -9,7 +9,7 @@ PCRE_VERSION="8.45"
 PCRE_TARBALL="pcre-${PCRE_VERSION}.tar.gz"
 SIGIL_VERSION="0.4.0"
 SIGIL_TARBALL="sigil_${SIGIL_VERSION}_Linux_x86_64.tgz"
-ZLIB_VERSION="1.2.11"
+ZLIB_VERSION="1.2.12"
 ZLIB_TARBALL="zlib-${ZLIB_VERSION}.tar.gz"
 
 suppress() {