diff --git a/conda_requirements.txt b/conda_requirements.txt
index d2ac2df..bac5dc2 100644
--- a/conda_requirements.txt
+++ b/conda_requirements.txt
@@ -25,7 +25,7 @@ mistune==0.7.2
 nbconvert==4.2.0
 nbformat==4.0.1
 ndg_httpsclient
-notebook==4.2.0
+notebook==6.4.12
 numpy==1.11.0
 pandas==0.18.1
 pandas-datareader==0.2.1
diff --git a/py3_requirements.txt b/py3_requirements.txt
index 9161a23..6317012 100644
--- a/py3_requirements.txt
+++ b/py3_requirements.txt
@@ -31,7 +31,7 @@ mistune==0.7.2
 nbconvert==4.2.0
 nbformat==4.0.1
 ndg-httpsclient==0.4.0
-notebook==4.2.0
+notebook==6.4.12
 numpy==1.11.0
 oauthlib==1.1.1
 openpyxl==2.3.5
diff --git a/py3_server_requirements.txt b/py3_server_requirements.txt
index c870d1e..0040f2e 100644
--- a/py3_server_requirements.txt
+++ b/py3_server_requirements.txt
@@ -42,7 +42,7 @@ nbconvert==4.2.0
 nbformat==4.0.1
 ndg-httpsclient==0.4.0
 nose==1.3.7
-notebook==4.2.0
+notebook==6.4.12
 numpy==1.11.0
 oauthenticator==0.5.0
 oauthlib==1.1.1
diff --git a/requirements.txt b/requirements.txt
index ec17770..52cea96 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -33,7 +33,7 @@ mistune==0.7.2
 nbconvert==4.2.0
 nbformat==4.0.1
 ndg-httpsclient==0.4.0
-notebook==4.2.0
+notebook==6.4.12
 numpy==1.11.0
 oauthlib==1.1.1
 openpyxl==2.3.5