diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index c01c841a911ce0045d46439b1ff9b9e074bcc078..c4fd7de68e6d240497faa94e8092638da7861b67 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -3,7 +3,7 @@ image: ubuntu:latest
 
 
 before_script:
-  - apt-get update -qq && apt-get install -y -qq build-essential libhdf5-serial-dev gfortran csh git libtool-bin autoconf openmpi-bin openmpi-common libopenmpi-dev
+  - apt-get update -qq && apt-get install -y -qq build-essential libhdf5-serial-dev gfortran csh git libtool-bin autoconf openmpi-bin openmpi-common libopenmpi-dev python3
   - export LHOME=`pwd`
 # Compile grackle
   - mkdir grackle