diff --git a/build/docker_install.sh b/build/docker_install.sh
index 515b393..1dfad0e 100644
--- a/build/docker_install.sh
+++ b/build/docker_install.sh
@@ -10,7 +10,7 @@ set -xe
 
 # Install git (the php image doesn't have it) which is required by composer
 apt-get update -yqq
-apt-get install git libpq-dev libmysqlclient18 unzip -yqq
+apt-get install git libpq-dev unzip -yqq
 
 # Install phpunit, the tool that we will use for testing
 curl -Lo /usr/local/bin/phpunit https://phar.phpunit.de/phpunit.phar