diff --git a/.travis.yml b/.travis.yml
index 3b9f030..e86a341 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,29 +1,30 @@
 dist: trusty
 sudo: required
-
-language: 
-  - rust
-  - cpp
-
+language:
+- rust
+- cpp
 addons:
   apt:
     sources:
-      - ubuntu-toolchain-r-test
+    - ubuntu-toolchain-r-test
     packages:
-      - gcc-6
-      - g++-6
-      - cmake
-
+    - gcc-6
+    - g++-6
+    - cmake
 script:
-  - export CC=/usr/bin/gcc-6
-  - export CXX=/usr/bin/g++-6
-  - cargo build --release --verbose
-  - cargo test --release --verbose
-  - cargo test --release --manifest-path=spec/Cargo.toml 
-  
-after_success: |
-    cargo doc \
-    && echo '<meta http-equiv=refresh content=0;url=parity_wasm/index.html>' > target/doc/index.html && \
-    sudo pip install ghp-import && \
-    ghp-import -n target/doc && \
-    git push -qf https://${TOKEN}@github.com/${TRAVIS_REPO_SLUG}.git gh-pages
\ No newline at end of file
+- export CC=/usr/bin/gcc-6
+- export CXX=/usr/bin/g++-6
+- cargo build --release --verbose
+- cargo test --release --verbose
+- cargo test --release --manifest-path=spec/Cargo.toml
+after_success: |-
+  [ $TRAVIS_BRANCH = master ] &&
+  [ $TRAVIS_PULL_REQUEST = false ] &&
+  cargo doc \
+  && echo '<meta http-equiv=refresh content=0;url=parity_wasm/index.html>' > target/doc/index.html && \
+  sudo pip install ghp-import && \
+  ghp-import -n target/doc && \
+  git push -qf https://${TOKEN}@github.com/${TRAVIS_REPO_SLUG}.git gh-pages
+env:
+  global:
+    secure: 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