diff --git a/CHANGES.rst b/CHANGES.rst
index c5bce71e86..a9ef2f8e26 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,6 +1,13 @@
 Changes
 =======
 
+1.26.4 (2021-03-15)
+-------------------
+
+* Changed behavior of the default ``SSLContext`` when connecting to HTTPS proxy
+  during HTTPS requests. The default ``SSLContext`` now sets ``check_hostname=True``.
+
+
 1.26.3 (2021-01-26)
 -------------------
 
diff --git a/src/urllib3/_version.py b/src/urllib3/_version.py
index 97f83dc296..97c983300b 100644
--- a/src/urllib3/_version.py
+++ b/src/urllib3/_version.py
@@ -1,2 +1,2 @@
 # This file is protected via CODEOWNERS
-__version__ = "1.26.3"
+__version__ = "1.26.4"