diff --git a/fetch.py b/fetch.py
index e867dadbe..7483f48a8 100755
--- a/fetch.py
+++ b/fetch.py
@@ -114,7 +114,7 @@ class GclientGitCheckout(GclientCheckout, GitCheckout):
                              for key, value in soln.iteritems())
       soln_strings.append('  {\n%s\n  },' % soln_string)
     gclient_spec = 'solutions = [\n%s\n]\n' % '\n'.join(soln_strings)
-    extra_keys = ['target_os', 'target_os_only']
+    extra_keys = ['target_os', 'target_os_only', 'cache_dir']
     gclient_spec += ''.join('%s = %s\n' % (key, _format_literal(self.spec[key]))
                              for key in extra_keys if key in self.spec)
     return gclient_spec
diff --git a/fetch_configs/webrtc.py b/fetch_configs/webrtc.py
index eb62892ad..8f4568dbb 100644
--- a/fetch_configs/webrtc.py
+++ b/fetch_configs/webrtc.py
@@ -31,6 +31,9 @@ class WebRTC(config_util.Config):
     if props.get('target_os'):
       spec['target_os'] = props['target_os'].split(',')
 
+    if props.get('cache_dir'):
+      spec['cache_dir'] = props['cache_dir']
+
     return {
       'type': 'gclient_git',
       'gclient_git_spec': spec,