diff --git a/ci/travis_run.py b/ci/travis_run.py
index 8424cd59..021e3ff2 100755
--- a/ci/travis_run.py
+++ b/ci/travis_run.py
@@ -38,7 +38,7 @@ def execute(command):
     while True:
         output = process.stdout.readline()
         if output:
-            line = output.decode('ascii').rstrip()
+            line = output.decode('utf-8').rstrip()
             print(">>> " + line)
             process.stdout.flush()
         ret = process.poll()