diff --git a/.gitmodules b/.gitmodules
index 8228ddc0..e69de29b 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +0,0 @@
-[submodule "libCZI"]
-	path = libCZI
-	url = https://github.com/zeiss-microscopy/libCZI.git
diff --git a/libCZI b/libCZI
deleted file mode 160000
index 0922f1b1..00000000
--- a/libCZI
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 0922f1b13582680b2c9801415f7368d17e8b360b
diff --git a/travis/build-wheels.sh b/travis/build-wheels.sh
index 61b80a38..24ae7b12 100755
--- a/travis/build-wheels.sh
+++ b/travis/build-wheels.sh
@@ -5,12 +5,16 @@ set -e -x
 yum install -y libpng-devel zlib-devel
 
 # Install newer devtools that work on manylinux
-GCCLOC=https://github.com/squeaky-pl/centos-devtools/releases/download/6.3
-GCCAR=gcc-6.3.0-binutils-2.27-x86_64.tar.bz2
-curl -o ${GCCAR} -L ${GCCLOC}/${GCCAR}
-tar xvjf ${GCCAR}
+#GCCLOC=https://github.com/squeaky-pl/centos-devtools/releases/download/6.3
+#GCCAR=gcc-6.3.0-binutils-2.27-x86_64.tar.bz2
+#export CC=/opt/devtools-6.3/bin/gcc
+#export CXX=/opt/devtools-6.3/bin/g++
+GCCLOC=https://github.com/Noctem/pogeo-toolchain/releases/download/v1.5
+GCCAR=gcc-7.3-centos5-x86-64.tar.bz2
 export CC=/toolchain/bin/gcc
 export CXX=/toolchain/bin/g++
+curl -o ${GCCAR} -L ${GCCLOC}/${GCCAR}
+tar xvjf ${GCCAR}
 
 # Compile wheels
 for PYBIN in /opt/python/*/bin; do