diff --git a/.changes/1.35.21.json b/.changes/1.35.21.json
new file mode 100644
index 0000000000..53907cc573
--- /dev/null
+++ b/.changes/1.35.21.json
@@ -0,0 +1,32 @@
+[
+  {
+    "category": "``codebuild``",
+    "description": "GitLab Enhancements - Add support for Self-Hosted GitLab runners in CodeBuild. Add group webhooks",
+    "type": "api-change"
+  },
+  {
+    "category": "``ecr``",
+    "description": "The `DescribeImageScanning` API now includes `fixAvailable`, `exploitAvailable`, and `fixedInVersion` fields to provide more detailed information about the availability of fixes, exploits, and fixed versions for identified image vulnerabilities.",
+    "type": "api-change"
+  },
+  {
+    "category": "``ecs``",
+    "description": "This is a documentation only release to address various tickets.",
+    "type": "api-change"
+  },
+  {
+    "category": "``lambda``",
+    "description": "Support for JSON resource-based policies and block public access",
+    "type": "api-change"
+  },
+  {
+    "category": "``rds``",
+    "description": "Updates Amazon RDS documentation with configuration information about the BYOL model for RDS for Db2.",
+    "type": "api-change"
+  },
+  {
+    "category": "``ssm``",
+    "description": "Support for additional levels of cross-account, cross-Region organizational units in Automation. Various documentation updates.",
+    "type": "api-change"
+  }
+]
\ No newline at end of file
diff --git a/.changes/next-release/api-change-codebuild-47759.json b/.changes/next-release/api-change-codebuild-47759.json
deleted file mode 100644
index dfec0d43cf..0000000000
--- a/.changes/next-release/api-change-codebuild-47759.json
+++ /dev/null
@@ -1,5 +0,0 @@
-{
-  "type": "api-change",
-  "category": "``codebuild``",
-  "description": "GitLab Enhancements - Add support for Self-Hosted GitLab runners in CodeBuild. Add group webhooks"
-}
diff --git a/.changes/next-release/api-change-ecr-17459.json b/.changes/next-release/api-change-ecr-17459.json
deleted file mode 100644
index 0a0224786f..0000000000
--- a/.changes/next-release/api-change-ecr-17459.json
+++ /dev/null
@@ -1,5 +0,0 @@
-{
-  "type": "api-change",
-  "category": "``ecr``",
-  "description": "The `DescribeImageScanning` API now includes `fixAvailable`, `exploitAvailable`, and `fixedInVersion` fields to provide more detailed information about the availability of fixes, exploits, and fixed versions for identified image vulnerabilities."
-}
diff --git a/.changes/next-release/api-change-ecs-75522.json b/.changes/next-release/api-change-ecs-75522.json
deleted file mode 100644
index 79883be357..0000000000
--- a/.changes/next-release/api-change-ecs-75522.json
+++ /dev/null
@@ -1,5 +0,0 @@
-{
-  "type": "api-change",
-  "category": "``ecs``",
-  "description": "This is a documentation only release to address various tickets."
-}
diff --git a/.changes/next-release/api-change-lambda-85096.json b/.changes/next-release/api-change-lambda-85096.json
deleted file mode 100644
index 109d50a5f8..0000000000
--- a/.changes/next-release/api-change-lambda-85096.json
+++ /dev/null
@@ -1,5 +0,0 @@
-{
-  "type": "api-change",
-  "category": "``lambda``",
-  "description": "Support for JSON resource-based policies and block public access"
-}
diff --git a/.changes/next-release/api-change-rds-24795.json b/.changes/next-release/api-change-rds-24795.json
deleted file mode 100644
index 5d3e5e7791..0000000000
--- a/.changes/next-release/api-change-rds-24795.json
+++ /dev/null
@@ -1,5 +0,0 @@
-{
-  "type": "api-change",
-  "category": "``rds``",
-  "description": "Updates Amazon RDS documentation with configuration information about the BYOL model for RDS for Db2."
-}
diff --git a/.changes/next-release/api-change-ssm-12300.json b/.changes/next-release/api-change-ssm-12300.json
deleted file mode 100644
index 5d7f797496..0000000000
--- a/.changes/next-release/api-change-ssm-12300.json
+++ /dev/null
@@ -1,5 +0,0 @@
-{
-  "type": "api-change",
-  "category": "``ssm``",
-  "description": "Support for additional levels of cross-account, cross-Region organizational units in Automation. Various documentation updates."
-}
diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index c9d9527004..3fbe84a0c0 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -2,6 +2,17 @@
 CHANGELOG
 =========
 
+1.35.21
+=======
+
+* api-change:``codebuild``: GitLab Enhancements - Add support for Self-Hosted GitLab runners in CodeBuild. Add group webhooks
+* api-change:``ecr``: The `DescribeImageScanning` API now includes `fixAvailable`, `exploitAvailable`, and `fixedInVersion` fields to provide more detailed information about the availability of fixes, exploits, and fixed versions for identified image vulnerabilities.
+* api-change:``ecs``: This is a documentation only release to address various tickets.
+* api-change:``lambda``: Support for JSON resource-based policies and block public access
+* api-change:``rds``: Updates Amazon RDS documentation with configuration information about the BYOL model for RDS for Db2.
+* api-change:``ssm``: Support for additional levels of cross-account, cross-Region organizational units in Automation. Various documentation updates.
+
+
 1.35.20
 =======
 
diff --git a/botocore/__init__.py b/botocore/__init__.py
index d053516c27..71fa9d8af5 100644
--- a/botocore/__init__.py
+++ b/botocore/__init__.py
@@ -16,7 +16,7 @@
 import os
 import re
 
-__version__ = '1.35.20'
+__version__ = '1.35.21'
 
 
 class NullHandler(logging.Handler):
diff --git a/docs/source/conf.py b/docs/source/conf.py
index 245870f5e8..91bd2a6292 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -59,7 +59,7 @@
 # The short X.Y version.
 version = '1.35.'
 # The full version, including alpha/beta/rc tags.
-release = '1.35.20'
+release = '1.35.21'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.