diff --git a/python_installs.sh b/python_installs.sh
old mode 100644
new mode 100755
index 0926d16..420757e
--- a/python_installs.sh
+++ b/python_installs.sh
@@ -54,6 +54,7 @@ PACKAGES="\
     sortedcontainers \
     bitstring \
     pyyaml \
+    serial \
 "
 
 for package in ${PACKAGES}; do