diff --git a/virtualEnv/requirements.txt b/virtualEnv/requirements.txt
index 40c03ec..46163a8 100644
--- a/virtualEnv/requirements.txt
+++ b/virtualEnv/requirements.txt
@@ -58,4 +58,4 @@ tqdm==4.11.2
 traitlets==4.3.2
 wcwidth==0.1.7
 webencodings==0.5.1
-Werkzeug==0.12.1
+Werkzeug==0.15.3
diff --git a/virtualEnv/requirementsAll.txt b/virtualEnv/requirementsAll.txt
index 36834f7..fd34559 100644
--- a/virtualEnv/requirementsAll.txt
+++ b/virtualEnv/requirementsAll.txt
@@ -55,4 +55,4 @@ tqdm==4.11.2
 traitlets==4.3.2
 wcwidth==0.1.7
 webencodings==0.5.1
-Werkzeug==0.12.1
+Werkzeug==0.15.3
diff --git a/virtualEnv/requirementsDataMiningAndFlask.txt b/virtualEnv/requirementsDataMiningAndFlask.txt
index e846d5f..9fc7af1 100644
--- a/virtualEnv/requirementsDataMiningAndFlask.txt
+++ b/virtualEnv/requirementsDataMiningAndFlask.txt
@@ -59,4 +59,4 @@ tqdm==4.11.2
 traitlets==4.3.2
 wcwidth==0.1.7
 webencodings==0.5.1
-Werkzeug==0.12.1
+Werkzeug==0.15.3
diff --git a/virtualEnv/requirementsFlask.txt b/virtualEnv/requirementsFlask.txt
index 8baf12a..4657590 100644
--- a/virtualEnv/requirementsFlask.txt
+++ b/virtualEnv/requirementsFlask.txt
@@ -15,4 +15,4 @@ pytz==2017.2
 requests==2.14.2
 simplekml==1.3.0
 six==1.10.0
-Werkzeug==0.12.1
+Werkzeug==0.15.3