diff --git a/requirements.txt b/requirements.txt
index cda29a90378398d02e2cfb4c08e6ed847d036c04..2c2fcacc6449a04a016414e3068d85938332c6fa 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,7 +5,7 @@ lxml==4.2.0
 matplotlib==2.2.2
 numpy==1.14.2
 Pillow>=3.4.1
-python-crfsuite==0.9.5
+python-crfsuite==0.9.6
 Pyqtree==0.24
 requests==2.21.0
 sciencebeam-alignment==0.0.2