diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 140219777eae6afbbb22cfcad2d17471fb499138..4c33f4ee6fc3e49727837a6dd04ed6dc0018a4a2 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -34,6 +34,7 @@ test:centos6.6:
     - module load LibTIFF/4.0.3-goolf-1.4.10
     - module load libpng/1.6.17-goolf-1.4.10
     - module load zlib/1.2.8-goolf-1.4.10
+    - module load Perl/5.16.3-goolf-1.4.10
     - module load HH-suite/2.0.16-goolf-1.4.10-Boost-1.53.0
     - echo "... done running centos6.6 'before_script'."
   script: