diff --git a/.travis.yml b/.travis.yml
index 3ca0788..165f76a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,7 +5,12 @@
       "master"
     ]
   },
-  "cache": "pip",
+  "cache": {
+    "directories": [
+      "./rust/target/"
+    ],
+    "pip": true
+  },
   "dist": "trusty",
   "git": {
     "submodules": false
diff --git a/scripts/make_travisconf.py b/scripts/make_travisconf.py
index 5f78500..ba87de0 100644
--- a/scripts/make_travisconf.py
+++ b/scripts/make_travisconf.py
@@ -10,7 +10,12 @@ cfg = {}
 cfg['sudo'] = True
 cfg['dist'] = 'trusty'
 cfg['language'] = 'python'
-cfg['cache'] = 'pip'
+cfg['cache'] = {
+    'pip': True,
+    'directories': [
+        './rust/target/'
+    ]
+}
 
 cfg['git'] = {
     'submodules': False