diff --git a/examples/html-and-python/server/requirements.txt b/examples/html-and-python/server/requirements.txt
index 9f1814f..1036c4b 100644
--- a/examples/html-and-python/server/requirements.txt
+++ b/examples/html-and-python/server/requirements.txt
@@ -1,3 +1,3 @@
-Flask==2.0.1
-Flask-Cors==3.0.10
+Flask==2.2.5
+Flask-Cors==4.0.1
 smartpay==0.5.0
\ No newline at end of file
diff --git a/examples/react-and-python/server/requirements.txt b/examples/react-and-python/server/requirements.txt
index 9f1814f..1036c4b 100644
--- a/examples/react-and-python/server/requirements.txt
+++ b/examples/react-and-python/server/requirements.txt
@@ -1,3 +1,3 @@
-Flask==2.0.1
-Flask-Cors==3.0.10
+Flask==2.2.5
+Flask-Cors==4.0.1
 smartpay==0.5.0
\ No newline at end of file
diff --git a/examples/vanillajs-and-python/server/requirements.txt b/examples/vanillajs-and-python/server/requirements.txt
index 9f1814f..1036c4b 100644
--- a/examples/vanillajs-and-python/server/requirements.txt
+++ b/examples/vanillajs-and-python/server/requirements.txt
@@ -1,3 +1,3 @@
-Flask==2.0.1
-Flask-Cors==3.0.10
+Flask==2.2.5
+Flask-Cors==4.0.1
 smartpay==0.5.0
\ No newline at end of file
diff --git a/server/python-with-html/requirements.txt b/server/python-with-html/requirements.txt
index 9f1814f..1036c4b 100644
--- a/server/python-with-html/requirements.txt
+++ b/server/python-with-html/requirements.txt
@@ -1,3 +1,3 @@
-Flask==2.0.1
-Flask-Cors==3.0.10
+Flask==2.2.5
+Flask-Cors==4.0.1
 smartpay==0.5.0
\ No newline at end of file
diff --git a/server/python/requirements.txt b/server/python/requirements.txt
index 9f1814f..1036c4b 100644
--- a/server/python/requirements.txt
+++ b/server/python/requirements.txt
@@ -1,3 +1,3 @@
-Flask==2.0.1
-Flask-Cors==3.0.10
+Flask==2.2.5
+Flask-Cors==4.0.1
 smartpay==0.5.0
\ No newline at end of file
diff --git a/webhook-server/python/requirements.txt b/webhook-server/python/requirements.txt
index 52d81d2..98d4f59 100644
--- a/webhook-server/python/requirements.txt
+++ b/webhook-server/python/requirements.txt
@@ -1,2 +1,2 @@
-Flask==2.0.1
+Flask==2.2.5
 pybase62==0.4.3