diff --git a/CHANGELOG.md b/CHANGELOG.md
index 96312f3..5e18859 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,8 @@
+# 0.6.3 (2020-05-27)
+
+### Added
+Pin gevent to version 20.6.1
+
 # 0.6.2 (2020-06-11)
 
 ### Fix
diff --git a/setup.py b/setup.py
index 6ffa316..cb925e0 100755
--- a/setup.py
+++ b/setup.py
@@ -2,7 +2,7 @@
 
 setup(
     name="canonicalwebteam.flask-base",
-    version="0.6.2",
+    version="0.6.3",
     description=(
         "Flask extension that applies common configurations"
         "to all of webteam's flask apps."
@@ -20,6 +20,7 @@
     install_requires=[
         "canonicalwebteam.yaml-responses[flask] (>=1,<2)",
         "flask (>=1,<2)",
+        "gevent==20.6.1",
         "talisker[gunicorn,gevent,flask,prometheus,raven] (>=0.18)",
         "Werkzeug (>=0.15,<0.16)",
     ],