diff --git a/dvc/__init__.py b/dvc/__init__.py
index 72769e611a..7288e58f9c 100644
--- a/dvc/__init__.py
+++ b/dvc/__init__.py
@@ -5,7 +5,7 @@
 """
 import os
 
-VERSION = '0.9.3'
+VERSION = '0.9.4'
 
 if os.getenv('APPVEYOR_REPO_TAG', '').lower() != 'true' and os.getenv('TRAVIS_TAG', '') == '':
     # Dynamically update version
diff --git a/dvc/cloud/base.py b/dvc/cloud/base.py
index 9e983753d6..3a23a23e69 100644
--- a/dvc/cloud/base.py
+++ b/dvc/cloud/base.py
@@ -75,7 +75,7 @@ def storage_prefix(self):
     def cache_file_key(self, fname):
         """ Key of a file within the bucket """
         relpath = os.path.relpath(fname, self._cloud_settings.cache.cache_dir)
-        relpath.replace('\\', '/')
+        relpath = relpath.replace('\\', '/')
         return '{}/{}'.format(self.storage_prefix, relpath).strip('/')
 
     @staticmethod