diff --git a/examples/server/aiohttp/requirements.txt b/examples/server/aiohttp/requirements.txt
index 48689934..7d6160ee 100644
--- a/examples/server/aiohttp/requirements.txt
+++ b/examples/server/aiohttp/requirements.txt
@@ -1,4 +1,4 @@
-aiohttp==1.2.0
+aiohttp==3.9.4
 async-timeout==1.1.0
 chardet==2.3.0
 multidict==2.1.4
diff --git a/examples/server/asgi/requirements.txt b/examples/server/asgi/requirements.txt
index 242e087c..011e2909 100644
--- a/examples/server/asgi/requirements.txt
+++ b/examples/server/asgi/requirements.txt
@@ -5,4 +5,4 @@ python_engineio
 six==1.11.0
 uvicorn==0.11.7
 uvloop==0.12.2
-websockets==7.0
+websockets==9.1
diff --git a/examples/server/sanic/requirements.txt b/examples/server/sanic/requirements.txt
index 4bfe5714..c198f8d6 100644
--- a/examples/server/sanic/requirements.txt
+++ b/examples/server/sanic/requirements.txt
@@ -1,8 +1,8 @@
 aiofiles==0.8.0
 httptools==0.3.0
 multidict==5.2.0
-sanic==21.12.0
+sanic==21.12.2
 sanic-routing==0.7.2
-ujson==5.2.0
+ujson==5.4.0
 uvloop==0.16.0
-websockets==10.1
+websockets==12.0
diff --git a/examples/server/tornado/requirements.txt b/examples/server/tornado/requirements.txt
index 43562ffb..d0e03fdf 100644
--- a/examples/server/tornado/requirements.txt
+++ b/examples/server/tornado/requirements.txt
@@ -1,3 +1,3 @@
-tornado==5.1.1
+tornado==6.4.1
 python-engineio
 six==1.10.0
diff --git a/examples/server/wsgi/requirements.txt b/examples/server/wsgi/requirements.txt
index 6cba99d0..9fd7a74e 100644
--- a/examples/server/wsgi/requirements.txt
+++ b/examples/server/wsgi/requirements.txt
@@ -2,14 +2,14 @@ appdirs==1.4.0
 click==6.7
 enum-compat==0.0.2
 enum34==1.1.6
-eventlet==0.20.1
-Flask==1.0.2
+eventlet==0.35.2
+Flask==2.2.5
 greenlet==0.4.12
 itsdangerous==0.24
-Jinja2==2.10.1
+Jinja2==3.1.4
 MarkupSafe==0.23
 packaging==16.8
 pyparsing==2.1.10
 python-engineio
 six==1.10.0
-Werkzeug==0.15.3
+Werkzeug==3.0.3