diff --git a/.travis.yml b/.travis.yml
index dc995cd55d1..bcf50159b79 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -94,7 +94,7 @@ jobs:
         - sudo apt-get update && sudo apt-get install python3 python3-pip python3-setuptools -y
         - ./check_test_suite.py && travis_terminate 0 || echo 'Continuing setup'
         - pip3 install wheel  # install wheel first explicitly
-        - pip3 install pyyaml
+        - pip3 install pyyaml==5.4.1
       script:
         - >
           ${MVN} apache-rat:check -Prat --fail-at-end