diff --git a/.travis.yml b/.travis.yml
index 91e989502ed..78477e511bd 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -8,8 +8,8 @@ python:
   - 3.4
   - 3.5
 install:
-  # Validate requirements_all.txt on Python 3.5
-  - if [[ $TRAVIS_PYTHON_VERSION == '3.5' ]]; then python3 setup.py -q develop 2>/dev/null; tput setaf 1; script/gen_requirements_all.py validate; fi
+  # Validate requirements_all.txt on Python 3.4
+  - if [[ $TRAVIS_PYTHON_VERSION == '3.4' ]]; then python3 setup.py -q develop 2>/dev/null; tput setaf 1; script/gen_requirements_all.py validate; fi
   - script/bootstrap_server
 script:
   - script/cibuild
diff --git a/script/cibuild b/script/cibuild
index 778cbe0db52..beb7b22693d 100755
--- a/script/cibuild
+++ b/script/cibuild
@@ -5,7 +5,7 @@
 
 cd "$(dirname "$0")/.."
 
-if [ "$TRAVIS_PYTHON_VERSION" != "3.4" ]; then
+if [ "$TRAVIS_PYTHON_VERSION" != "3.5" ]; then
   NO_LINT=1
 fi