diff --git a/poetry.lock b/poetry.lock
index 578a1ce..17c17d7 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1003,11 +1003,11 @@ python-versions = "*"
 
 [[package]]
 name = "nltk"
-version = "3.5"
+version = "3.6.2"
 description = "Natural Language Toolkit"
 category = "main"
 optional = false
-python-versions = "*"
+python-versions = ">=3.5.*"
 
 [package.dependencies]
 click = "*"
@@ -1016,9 +1016,9 @@ regex = "*"
 tqdm = "*"
 
 [package.extras]
-all = ["requests", "numpy", "python-crfsuite", "scikit-learn", "twython", "pyparsing", "scipy", "matplotlib", "gensim"]
+all = ["matplotlib", "twython", "scipy", "numpy", "gensim (<4.0.0)", "python-crfsuite", "pyparsing", "scikit-learn", "requests"]
 corenlp = ["requests"]
-machine_learning = ["gensim", "numpy", "python-crfsuite", "scikit-learn", "scipy"]
+machine_learning = ["gensim (<4.0.0)", "numpy", "python-crfsuite", "scikit-learn", "scipy"]
 plot = ["matplotlib"]
 tgrep = ["pyparsing"]
 twitter = ["twython"]
@@ -2283,7 +2283,7 @@ torch = ["torch"]
 [metadata]
 lock-version = "1.1"
 python-versions = ">=3.7,<4.0"
-content-hash = "6612c0667541f6a9688a7de0251fb3bb9c8c05e170e535b1d663146c3f108aea"
+content-hash = "827d627e9a808fb2225c0b8e080fa9a3aac6b241eb80efa046fba8bf1c97feb0"
 
 [metadata.files]
 alabaster = [
@@ -2945,7 +2945,8 @@ nlpaug = [
     {file = "nlpaug-1.1.7-py3-none-any.whl", hash = "sha256:41c678aff5c747a26f6e3c80ac380f26c18f810bdfdf1e535dc864fe451ffe77"},
 ]
 nltk = [
-    {file = "nltk-3.5.zip", hash = "sha256:845365449cd8c5f9731f7cb9f8bd6fd0767553b9d53af9eb1b3abf7700936b35"},
+    {file = "nltk-3.6.2-py3-none-any.whl", hash = "sha256:240e23ab1ab159ef9940777d30c7c72d7e76d91877099218a7585370c11f6b9e"},
+    {file = "nltk-3.6.2.zip", hash = "sha256:57d556abed621ab9be225cc6d2df1edce17572efb67a3d754630c9f8381503eb"},
 ]
 nodeenv = [
     {file = "nodeenv-1.6.0-py2.py3-none-any.whl", hash = "sha256:621e6b7076565ddcacd2db0294c0381e01fd28945ab36bcf00f41c5daf63bef7"},
diff --git a/pyproject.toml b/pyproject.toml
index 257870c..82dc5c0 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -42,7 +42,7 @@ flashtext = ">=2.7"
 ftfy = ">=4.2.0"
 mosestokenizer = ">=1.1.0"
 nlpaug = ">=1.0.1"
-nltk = ">=3.4.2,<3.6"
+nltk = ">=3.4.2,<3.7"
 numpy = ">1.15.4"
 phonenumbers = ">=8.10.12"
 regex = ">=2019.8.19"