diff --git a/CHANGES.md b/CHANGES.md
index a9c4a94..f158154 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,6 +1,6 @@
 # CHANGES
 
-## 1.13.6
+## 1.13.7
 
 * Modify means by which zlib version is detected.
 
diff --git a/Makefile b/Makefile
index 66b2434..3dfc138 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-CAVEMAN_VERSION=1.13.6
+CAVEMAN_VERSION=1.13.7
 TEST_REF?=""
 #Compiler
 CC?=gcc
diff --git a/setup.sh b/setup.sh
index ca1b871..f33f34c 100755
--- a/setup.sh
+++ b/setup.sh
@@ -80,7 +80,7 @@ INIT_DIR=`pwd`
     grep MemTotal /proc/meminfo
     set +x
     echo; echo
-LIBZ_VER=`echo '#include <zlib.h>' | cpp -H -o /dev/null | & head -1 | cut -d' ' -f 2 | xargs grep -e '#define ZLIB_VERSION' | cut -d ' ' -f 3 | perl -pe 's/["\n]//g'`
+LIBZ_VER=`echo '#include <zlib.h>' | cpp -H -o /dev/null |& head -1 | cut -d' ' -f 2 | xargs grep -e '#define ZLIB_VERSION' | cut -d ' ' -f 3 | perl -pe 's/["\n]//g'`
 echo $LIBZ_VER
 if version_gt $LIBZ_VER $REQUIRED_MIN_LIBZ ; then
 	echo "Found acceptable libz version $LIBZ_VER."