diff --git a/.changes/1.36.21.json b/.changes/1.36.21.json
new file mode 100644
index 000000000000..39bc4239bbbc
--- /dev/null
+++ b/.changes/1.36.21.json
@@ -0,0 +1,27 @@
+[
+  {
+    "category": "``connect``",
+    "description": "Configure holidays and other overrides to hours of operation in advance. During contact handling, Amazon Connect automatically checks for overrides and provides customers with an appropriate flow path. After an override period passes call center automatically reverts to standard hours of operation.",
+    "type": "api-change"
+  },
+  {
+    "category": "``dms``",
+    "description": "Add parameters to support for kerberos authentication. Add parameter for disabling the Unicode source filter with PostgreSQL settings. Add parameter to use large integer value with Kinesis/Kafka settings.",
+    "type": "api-change"
+  },
+  {
+    "category": "``glue``",
+    "description": "To support customer-managed encryption in Data Quality to allow customers encrypt data with their own KMS key, we will add a DataQualityEncryption field to the SecurityConfiguration API where customers can provide their KMS keys.",
+    "type": "api-change"
+  },
+  {
+    "category": "``guardduty``",
+    "description": "Improved descriptions for certain APIs.",
+    "type": "api-change"
+  },
+  {
+    "category": "``route53domains``",
+    "description": "This release includes the following API updates: added the enumeration type RESTORE_DOMAIN to the OperationType; constrained the Price attribute to non-negative values; updated the LangCode to allow 2 or 3 alphabetical characters.",
+    "type": "api-change"
+  }
+]
\ No newline at end of file
diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index bf89fa455296..0b4165d7e387 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -2,6 +2,16 @@
 CHANGELOG
 =========
 
+1.36.21
+=======
+
+* api-change:``connect``: Configure holidays and other overrides to hours of operation in advance. During contact handling, Amazon Connect automatically checks for overrides and provides customers with an appropriate flow path. After an override period passes call center automatically reverts to standard hours of operation.
+* api-change:``dms``: Add parameters to support for kerberos authentication. Add parameter for disabling the Unicode source filter with PostgreSQL settings. Add parameter to use large integer value with Kinesis/Kafka settings.
+* api-change:``glue``: To support customer-managed encryption in Data Quality to allow customers encrypt data with their own KMS key, we will add a DataQualityEncryption field to the SecurityConfiguration API where customers can provide their KMS keys.
+* api-change:``guardduty``: Improved descriptions for certain APIs.
+* api-change:``route53domains``: This release includes the following API updates: added the enumeration type RESTORE_DOMAIN to the OperationType; constrained the Price attribute to non-negative values; updated the LangCode to allow 2 or 3 alphabetical characters.
+
+
 1.36.20
 =======
 
diff --git a/awscli/__init__.py b/awscli/__init__.py
index 9fe87100f2e6..075a94d4f7ff 100644
--- a/awscli/__init__.py
+++ b/awscli/__init__.py
@@ -18,7 +18,7 @@
 
 import os
 
-__version__ = '1.36.20'
+__version__ = '1.36.21'
 
 #
 # Get our data path to be added to botocore's search path
diff --git a/doc/source/conf.py b/doc/source/conf.py
index 6ac40e6d5054..5d3ffb875eb7 100644
--- a/doc/source/conf.py
+++ b/doc/source/conf.py
@@ -52,7 +52,7 @@
 # The short X.Y version.
 version = '1.36.'
 # The full version, including alpha/beta/rc tags.
-release = '1.36.20'
+release = '1.36.21'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
diff --git a/setup.cfg b/setup.cfg
index 50fe0259e1bd..333004acd0f2 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -3,7 +3,7 @@ universal = 0
 
 [metadata]
 requires_dist =
-        botocore==1.35.79
+        botocore==1.35.80
         docutils>=0.10,<0.17
         s3transfer>=0.10.0,<0.11.0
         PyYAML>=3.10,<6.1
diff --git a/setup.py b/setup.py
index 7a2c10403c94..557a0c91c5b8 100644
--- a/setup.py
+++ b/setup.py
@@ -24,7 +24,7 @@ def find_version(*file_paths):
 
 
 install_requires = [
-    'botocore==1.35.79',
+    'botocore==1.35.80',
     'docutils>=0.10,<0.17',
     's3transfer>=0.10.0,<0.11.0',
     'PyYAML>=3.10,<6.1',