diff --git a/requirements.txt b/requirements.txt
index 2abff2b..63499b0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
 numpy==1.13.1
 tensorflow>=1.1.0
-nltk==3.2.4
+nltk==3.4.5
 python-dateutil==2.6.1
\ No newline at end of file
diff --git a/setup.py b/setup.py
index 0626729..06cadcc 100644
--- a/setup.py
+++ b/setup.py
@@ -32,7 +32,7 @@
     install_requires=[
         "numpy==1.13.1",
         "tensorflow>=1.1.0",
-        "nltk==3.2.4",
+        "nltk==3.4.5",
         "python-dateutil==2.6.1",
     ],
 )