diff --git a/beat/core/toolchain.py b/beat/core/toolchain.py
index e98496115f7276119697e29d57b8ee530f00820d..e934ae2eed1963e75ab4c632c7ea96cb72192f55 100644
--- a/beat/core/toolchain.py
+++ b/beat/core/toolchain.py
@@ -44,7 +44,7 @@ Validation for toolchains
 
 import collections
 
-import simplejson
+import simplejson as json
 
 from . import schema
 from . import prototypes
@@ -716,7 +716,7 @@ class Toolchain(object):
           str: The JSON representation for this object
         """
 
-        return simplejson.dumps(self.data, indent=indent, cls=utils.NumpyJSONEncoder)
+        return json.dumps(self.data, indent=indent, cls=utils.NumpyJSONEncoder)
 
     def __str__(self):