roll credentials (#109)

diff --git a/.travis.yml b/.travis.yml
index c1dbda3..b340bfe 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -58,5 +58,5 @@
       repo: apache/openwhisk-runtime-php
 env:
   global:
-  - secure: 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
-  - secure: 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
+    - secure: "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"
+    - secure: "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"