diff --git a/poetry.lock b/poetry.lock
index 7387fa5..02528ab 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -367,7 +367,7 @@ name = "pygments"
 version = "2.7.4"
 description = "Pygments is a syntax highlighting package written in Python."
 category = "main"
-optional = false
+optional = true
 python-versions = ">=3.5"
 
 [[package]]
@@ -461,10 +461,10 @@ python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
 
 [[package]]
 name = "snowballstemmer"
-version = "2.0.0"
-description = "This package provides 26 stemmers for 25 languages generated from Snowball algorithms."
+version = "2.1.0"
+description = "This package provides 29 stemmers for 28 languages generated from Snowball algorithms."
 category = "main"
-optional = true
+optional = false
 python-versions = "*"
 
 [[package]]
@@ -916,8 +916,8 @@ smmap = [
     {file = "smmap-3.0.4.tar.gz", hash = "sha256:9c98bbd1f9786d22f14b3d4126894d56befb835ec90cef151af566c7e19b5d24"},
 ]
 snowballstemmer = [
-    {file = "snowballstemmer-2.0.0-py2.py3-none-any.whl", hash = "sha256:209f257d7533fdb3cb73bdbd24f436239ca3b2fa67d56f6ff88e86be08cc5ef0"},
-    {file = "snowballstemmer-2.0.0.tar.gz", hash = "sha256:df3bac3df4c2c01363f3dd2cfa78cce2840a79b9f1c2d2de9ce8d31683992f52"},
+    {file = "snowballstemmer-2.1.0-py2.py3-none-any.whl", hash = "sha256:b51b447bea85f9968c13b650126a888aabd4cb4463fca868ec596826325dedc2"},
+    {file = "snowballstemmer-2.1.0.tar.gz", hash = "sha256:e997baa4f2e9139951b6f4c631bad912dfd3c792467e2f03d7239464af90e914"},
 ]
 sortedcontainers = [
     {file = "sortedcontainers-2.3.0-py2.py3-none-any.whl", hash = "sha256:37257a32add0a3ee490bb170b599e93095eed89a55da91fa9f48753ea12fd73f"},