diff --git a/.travis.yml b/.travis.yml
index 71442d049..b9e719b11 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -25,7 +25,7 @@ cache:
 
 before_install:
 # Perl modules needed for testing
-  - yes yes | sudo cpan -fi Unix::Processors Parallel::Forker Bit::Vector
+  - yes yes | sudo cpan -fTi Unix::Processors Parallel::Forker Bit::Vector
   - sudo apt-get install gdb gtkwave
   - sudo apt-get install libgoogle-perftools-dev
 before_script: