diff --git a/python-bindings/requirements-dev.txt b/python-bindings/requirements-dev.txt
index c71ec98..58b5c69 100644
--- a/python-bindings/requirements-dev.txt
+++ b/python-bindings/requirements-dev.txt
@@ -2,4 +2,4 @@ pip>=20.2.3
 setuptools-rust>=0.11.3
 pytest>=3.5.0
 pytest-benchmark>=3.1.1
-sentencepiece==0.1.91
\ No newline at end of file
+sentencepiece==0.2.1
\ No newline at end of file