diff --git a/requirements.txt b/requirements.txt
index 3c3249ced..78a607f03 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 pyzmq
 coveralls
 codecov
-stix == 1.2.0.6
+stix
 git+https://github.com/MISP/PyMISP.git#egg=pymisp
 requests-mock
 pip