diff --git a/bin/compile b/bin/compile
index b65f1ba..2dcb814 100755
--- a/bin/compile
+++ b/bin/compile
@@ -4,11 +4,11 @@ set -eo pipefail; [[ $TRACE ]] && set -x
 
 NGINX_VERSION="1.10.1"
 NGINX_TARBALL="nginx-${NGINX_VERSION}.tar.gz"
-PCRE_VERSION="8.39"
+PCRE_VERSION="8.40"
 PCRE_TARBALL="pcre-${PCRE_VERSION}.tar.gz"
 SIGIL_VERSION="0.4.0"
 SIGIL_TARBALL="sigil_${SIGIL_VERSION}_Linux_x86_64.tgz"
-ZLIB_VERSION="1.2.9"
+ZLIB_VERSION="1.2.11"
 ZLIB_TARBALL="zlib-${ZLIB_VERSION}.tar.gz"
 
 suppress() {