diff --git a/.travis.yml b/.travis.yml
index 1873a0042..400ee82c4 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -39,7 +39,7 @@ script:
 
   - coverage run --append --include=PIL/* selftest.py
   - coverage run --append --include=PIL/* -m nose -vx Tests/test_*.py
-  - check-manifest
+  - check-manifest --ignore depends/libwebp-0.4.3/*
 
 after_success:
    # gather the coverage data