diff --git a/tools/install_libzmq.sh b/tools/install_libzmq.sh
index fdf7c716d..aefd629d5 100644
--- a/tools/install_libzmq.sh
+++ b/tools/install_libzmq.sh
@@ -2,8 +2,7 @@
 # script to install libzmq/libsodium for use in wheels
 set -ex
 LIBSODIUM_VERSION="1.0.19"
-
-LIBZMQ_VERSION="$(python3 -m buildutils.bundle)"
+LIBZMQ_VERSION="4.3.5"
 
 if [[ "$(uname)" == "Darwin" ]]; then
     ARCHS="x86_64"