diff --git a/.travis.yml b/.travis.yml
index 4d927751ab10ad925c55a3660666d0acfe1b320a..aed5da679a79bab19d4cc34be5bae47a3e8d1bbd 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -7,7 +7,7 @@ services: redis-server
 before_install:
   - sudo apt-get update -qq
   - sudo apt-get install -y swig
-  - pip install -r requirements.txt
+  - CFLAGS=-O0 pip install -r requirements.txt
   - pip install psycopg2
 install: pip install .
 before_script: