diff --git a/contrib/opencensus-ext-flask/CHANGELOG.md b/contrib/opencensus-ext-flask/CHANGELOG.md
index 4a0f95c98..f7b0c4431 100644
--- a/contrib/opencensus-ext-flask/CHANGELOG.md
+++ b/contrib/opencensus-ext-flask/CHANGELOG.md
@@ -4,6 +4,8 @@
 
 - Add exception information to span attributes
 ([#1188](https://github.com/census-instrumentation/opencensus-python/pull/1188))
+- Removed vulnerable versions of flask
+([#1207](https://github.com/census-instrumentation/opencensus-python/pull/1207))
 
 ## 0.8.1
 Released 2022-08-03
diff --git a/contrib/opencensus-ext-flask/setup.py b/contrib/opencensus-ext-flask/setup.py
index 63aa51329..b7164a205 100644
--- a/contrib/opencensus-ext-flask/setup.py
+++ b/contrib/opencensus-ext-flask/setup.py
@@ -49,7 +49,7 @@
     include_package_data=True,
     long_description=open('README.rst').read(),
     install_requires=[
-        'flask >= 0.12.3, < 3.0.0, != 1.1.3',
+        'flask >= 0.12.3, < 3.0.0, != 1.1.3, != 2.2.3, != 2.2.4',
         'opencensus >= 0.12.dev0, < 1.0.0',
     ],
     extras_require={},
diff --git a/contrib/opencensus-ext-requests/CHANGELOG.md b/contrib/opencensus-ext-requests/CHANGELOG.md
index ac6f5f597..f9060ff95 100644
--- a/contrib/opencensus-ext-requests/CHANGELOG.md
+++ b/contrib/opencensus-ext-requests/CHANGELOG.md
@@ -9,6 +9,8 @@ Released 2022-08-03
 ([#1143](https://github.com/census-instrumentation/opencensus-python/pull/1143))
 - Add `requests` library as a hard dependency
 ([#1146](https://github.com/census-instrumentation/opencensus-python/pull/1146))
+- Removed vulnerable versions of requests
+([#1207](https://github.com/census-instrumentation/opencensus-python/pull/1207))
 
 ## 0.7.5
 Released 2021-05-13
diff --git a/contrib/opencensus-ext-requests/setup.py b/contrib/opencensus-ext-requests/setup.py
index 5d6dad59f..33a771536 100644
--- a/contrib/opencensus-ext-requests/setup.py
+++ b/contrib/opencensus-ext-requests/setup.py
@@ -49,7 +49,7 @@
     include_package_data=True,
     long_description=open('README.rst').read(),
     install_requires=[
-        'opencensus >= 0.12.dev0, < 1.0.0',
+        'opencensus >= 0.12.dev0, < 1.0.0, != 2.28.2, != 2.29.0, != 2.30.0',
         'requests >= 2.19.0, < 3.0.0',
         'wrapt >= 1.0.0, < 2.0.0',
     ],