diff --git a/LatticeBERT/requirements.txt b/LatticeBERT/requirements.txt
index 85f5836..547a596 100644
--- a/LatticeBERT/requirements.txt
+++ b/LatticeBERT/requirements.txt
@@ -1,4 +1,4 @@
 tensorflow == 1.14.0
 tokenizers==0.8.0
-igraph
+python-igraph
 pygtrie