diff --git a/CHANGELOG.md b/CHANGELOG.md
index 384879914..70d4c183e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,8 @@
 # Changelog for AWS IoT Over-the-air Update Library
-
+### v3.2.0 (November 2021)
+ - [#275](https://github.com/aws/ota-for-aws-iot-embedded-sdk/pull/276) Updated the doxygen version from 1.8.20 to 1.9.2 
+ - [#236](https://github.com/aws/ota-for-aws-iot-embedded-sdk/pull/236) Added C++ guards
+ - [#231](https://github.com/aws/ota-for-aws-iot-embedded-sdk/pull/231) Added checks for http interface functions. 
 ### v3.1.0 (August 2021)
  - [#232](https://github.com/aws/ota-for-aws-iot-embedded-sdk/pull/232) Add updater version to the status details when job succeeds
  - [#216](https://github.com/aws/ota-for-aws-iot-embedded-sdk/pull/216), [#213](https://github.com/aws/ota-for-aws-iot-embedded-sdk/pull/213), [#226](https://github.com/aws/ota-for-aws-iot-embedded-sdk/pull/226), [#234](https://github.com/aws/ota-for-aws-iot-embedded-sdk/pull/234) Misc fixes to remove compiler warnings and resolve build failures on certain platforms.
diff --git a/docs/doxygen/config.doxyfile b/docs/doxygen/config.doxyfile
index ad465e1b5..c2e7fdf5c 100644
--- a/docs/doxygen/config.doxyfile
+++ b/docs/doxygen/config.doxyfile
@@ -38,7 +38,7 @@ PROJECT_NAME           = "AWS IoT Over-the-air Update"
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
-PROJECT_NUMBER         = v3.1.0
+PROJECT_NUMBER         = v3.2.0
 
 # Using the PROJECT_BRIEF tag one can provide an optional one line description
 # for a project that appears at the top of each page and should give viewer a
diff --git a/manifest.yml b/manifest.yml
index 9791b5398..18432524c 100644
--- a/manifest.yml
+++ b/manifest.yml
@@ -1,5 +1,5 @@
 name : "ota-for-aws-iot-embedded-sdk"
-version: "v3.1.0"
+version: "v3.2.0"
 description: |
   "Client library for using the AWS Over-the-air Update service on embedded devices.\n"
 dependencies:
diff --git a/source/include/ota.h b/source/include/ota.h
index 1237965d9..bc56f2df1 100644
--- a/source/include/ota.h
+++ b/source/include/ota.h
@@ -1,5 +1,5 @@
 /*
- * AWS IoT Over-the-air Update v3.1.0
+ * AWS IoT Over-the-air Update v3.2.0
  * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy of
diff --git a/source/include/ota_appversion32.h b/source/include/ota_appversion32.h
index d652a3e9d..829af951d 100644
--- a/source/include/ota_appversion32.h
+++ b/source/include/ota_appversion32.h
@@ -1,5 +1,5 @@
 /*
- * AWS IoT Over-the-air Update v3.1.0
+ * AWS IoT Over-the-air Update v3.2.0
  * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy of
diff --git a/source/include/ota_base64_private.h b/source/include/ota_base64_private.h
index 08fa165d9..249039370 100644
--- a/source/include/ota_base64_private.h
+++ b/source/include/ota_base64_private.h
@@ -1,5 +1,5 @@
 /*
- * AWS IoT Over-the-air Update v3.1.0
+ * AWS IoT Over-the-air Update v3.2.0
  * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy of
diff --git a/source/include/ota_cbor_private.h b/source/include/ota_cbor_private.h
index c99898958..5ab1ebdca 100644
--- a/source/include/ota_cbor_private.h
+++ b/source/include/ota_cbor_private.h
@@ -1,5 +1,5 @@
 /*
- * AWS IoT Over-the-air Update v3.1.0
+ * AWS IoT Over-the-air Update v3.2.0
  * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy of
diff --git a/source/include/ota_config_defaults.h b/source/include/ota_config_defaults.h
index adb927436..5f4eaa2d2 100644
--- a/source/include/ota_config_defaults.h
+++ b/source/include/ota_config_defaults.h
@@ -1,5 +1,5 @@
 /*
- * AWS IoT Over-the-air Update v3.1.0
+ * AWS IoT Over-the-air Update v3.2.0
  * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy of
diff --git a/source/include/ota_http_interface.h b/source/include/ota_http_interface.h
index d6261a7ab..cf1eaa496 100644
--- a/source/include/ota_http_interface.h
+++ b/source/include/ota_http_interface.h
@@ -1,5 +1,5 @@
 /*
- * AWS IoT Over-the-air Update v3.1.0
+ * AWS IoT Over-the-air Update v3.2.0
  * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy of
diff --git a/source/include/ota_http_private.h b/source/include/ota_http_private.h
index cc99dfb24..b132019b1 100644
--- a/source/include/ota_http_private.h
+++ b/source/include/ota_http_private.h
@@ -1,5 +1,5 @@
 /*
- * AWS IoT Over-the-air Update v3.1.0
+ * AWS IoT Over-the-air Update v3.2.0
  * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy of
diff --git a/source/include/ota_interface_private.h b/source/include/ota_interface_private.h
index d626fef35..d295b7a6a 100644
--- a/source/include/ota_interface_private.h
+++ b/source/include/ota_interface_private.h
@@ -1,5 +1,5 @@
 /*
- * AWS IoT Over-the-air Update v3.1.0
+ * AWS IoT Over-the-air Update v3.2.0
  * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy of
diff --git a/source/include/ota_mqtt_interface.h b/source/include/ota_mqtt_interface.h
index 674bf5800..2f05b7a40 100644
--- a/source/include/ota_mqtt_interface.h
+++ b/source/include/ota_mqtt_interface.h
@@ -1,5 +1,5 @@
 /*
- * AWS IoT Over-the-air Update v3.1.0
+ * AWS IoT Over-the-air Update v3.2.0
  * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy of
diff --git a/source/include/ota_mqtt_private.h b/source/include/ota_mqtt_private.h
index 4b80dd119..7ee6a4264 100644
--- a/source/include/ota_mqtt_private.h
+++ b/source/include/ota_mqtt_private.h
@@ -1,5 +1,5 @@
 /*
- * AWS IoT Over-the-air Update v3.1.0
+ * AWS IoT Over-the-air Update v3.2.0
  * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy of
diff --git a/source/include/ota_os_interface.h b/source/include/ota_os_interface.h
index b9dce03e1..0fa3d1330 100644
--- a/source/include/ota_os_interface.h
+++ b/source/include/ota_os_interface.h
@@ -1,5 +1,5 @@
 /*
- * AWS IoT Over-the-air Update v3.1.0
+ * AWS IoT Over-the-air Update v3.2.0
  * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy of
diff --git a/source/include/ota_platform_interface.h b/source/include/ota_platform_interface.h
index 3babdb3ed..6898c1884 100644
--- a/source/include/ota_platform_interface.h
+++ b/source/include/ota_platform_interface.h
@@ -1,5 +1,5 @@
 /*
- * AWS IoT Over-the-air Update v3.1.0
+ * AWS IoT Over-the-air Update v3.2.0
  * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy of
diff --git a/source/include/ota_private.h b/source/include/ota_private.h
index 45bf31e49..e1295d36f 100644
--- a/source/include/ota_private.h
+++ b/source/include/ota_private.h
@@ -1,5 +1,5 @@
 /*
- * AWS IoT Over-the-air Update v3.1.0
+ * AWS IoT Over-the-air Update v3.2.0
  * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy of
diff --git a/source/ota.c b/source/ota.c
index dc9858191..2cd4dcd4e 100644
--- a/source/ota.c
+++ b/source/ota.c
@@ -1,5 +1,5 @@
 /*
- * AWS IoT Over-the-air Update v3.1.0
+ * AWS IoT Over-the-air Update v3.2.0
  * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy of
diff --git a/source/ota_base64.c b/source/ota_base64.c
index 741edf6d6..2f912f936 100644
--- a/source/ota_base64.c
+++ b/source/ota_base64.c
@@ -1,5 +1,5 @@
 /*
- * AWS IoT Over-the-air Update v3.1.0
+ * AWS IoT Over-the-air Update v3.2.0
  * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy of
diff --git a/source/ota_cbor.c b/source/ota_cbor.c
index bf8374eec..27c858902 100644
--- a/source/ota_cbor.c
+++ b/source/ota_cbor.c
@@ -1,5 +1,5 @@
 /*
- * AWS IoT Over-the-air Update v3.1.0
+ * AWS IoT Over-the-air Update v3.2.0
  * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy of
diff --git a/source/ota_http.c b/source/ota_http.c
index 67ba1c55e..307c682f5 100644
--- a/source/ota_http.c
+++ b/source/ota_http.c
@@ -1,5 +1,5 @@
 /*
- * AWS IoT Over-the-air Update v3.1.0
+ * AWS IoT Over-the-air Update v3.2.0
  * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy of
diff --git a/source/ota_interface.c b/source/ota_interface.c
index 99c3f5c43..381f10135 100644
--- a/source/ota_interface.c
+++ b/source/ota_interface.c
@@ -1,5 +1,5 @@
 /*
- * AWS IoT Over-the-air Update v3.1.0
+ * AWS IoT Over-the-air Update v3.2.0
  * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy of
diff --git a/source/ota_mqtt.c b/source/ota_mqtt.c
index 25d04ce5a..95602d00a 100644
--- a/source/ota_mqtt.c
+++ b/source/ota_mqtt.c
@@ -1,5 +1,5 @@
 /*
- * AWS IoT Over-the-air Update v3.1.0
+ * AWS IoT Over-the-air Update v3.2.0
  * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy of
diff --git a/source/portable/os/ota_os_freertos.c b/source/portable/os/ota_os_freertos.c
index 41f723c45..170224e86 100644
--- a/source/portable/os/ota_os_freertos.c
+++ b/source/portable/os/ota_os_freertos.c
@@ -1,5 +1,5 @@
 /*
- * AWS IoT Over-the-air Update v3.1.0
+ * AWS IoT Over-the-air Update v3.2.0
  * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy of
diff --git a/source/portable/os/ota_os_freertos.h b/source/portable/os/ota_os_freertos.h
index 1f3dcd175..87a129fa0 100644
--- a/source/portable/os/ota_os_freertos.h
+++ b/source/portable/os/ota_os_freertos.h
@@ -1,5 +1,5 @@
 /*
- * AWS IoT Over-the-air Update v3.1.0
+ * AWS IoT Over-the-air Update v3.2.0
  * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy of
diff --git a/source/portable/os/ota_os_posix.c b/source/portable/os/ota_os_posix.c
index 2d9a0d1d6..e8a6af53b 100644
--- a/source/portable/os/ota_os_posix.c
+++ b/source/portable/os/ota_os_posix.c
@@ -1,5 +1,5 @@
 /*
- * AWS IoT Over-the-air Update v3.1.0
+ * AWS IoT Over-the-air Update v3.2.0
  * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy of
diff --git a/source/portable/os/ota_os_posix.h b/source/portable/os/ota_os_posix.h
index 5f936091e..2f3fb596d 100644
--- a/source/portable/os/ota_os_posix.h
+++ b/source/portable/os/ota_os_posix.h
@@ -1,5 +1,5 @@
 /*
- * AWS IoT Over-the-air Update v3.1.0
+ * AWS IoT Over-the-air Update v3.2.0
  * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy of
diff --git a/test/unit-test/ota_base64_utest.c b/test/unit-test/ota_base64_utest.c
index 38c565338..ba004082b 100644
--- a/test/unit-test/ota_base64_utest.c
+++ b/test/unit-test/ota_base64_utest.c
@@ -1,5 +1,5 @@
 /*
- * AWS IoT Over-the-air Update v3.1.0
+ * AWS IoT Over-the-air Update v3.2.0
  * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy of
diff --git a/test/unit-test/ota_cbor_utest.c b/test/unit-test/ota_cbor_utest.c
index c9962dca8..f9395df27 100644
--- a/test/unit-test/ota_cbor_utest.c
+++ b/test/unit-test/ota_cbor_utest.c
@@ -1,5 +1,5 @@
 /*
- * AWS IoT Over-the-air Update v3.1.0
+ * AWS IoT Over-the-air Update v3.2.0
  * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy of
diff --git a/test/unit-test/ota_config.h b/test/unit-test/ota_config.h
index 7c92a8efe..7a5a8c412 100644
--- a/test/unit-test/ota_config.h
+++ b/test/unit-test/ota_config.h
@@ -1,5 +1,5 @@
 /*
- * AWS IoT Over-the-air Update v3.1.0
+ * AWS IoT Over-the-air Update v3.2.0
  * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy of
diff --git a/test/unit-test/ota_os_posix_utest.c b/test/unit-test/ota_os_posix_utest.c
index 2140bc6dc..110cb04eb 100644
--- a/test/unit-test/ota_os_posix_utest.c
+++ b/test/unit-test/ota_os_posix_utest.c
@@ -1,5 +1,5 @@
 /*
- * AWS IoT Over-the-air Update v3.1.0
+ * AWS IoT Over-the-air Update v3.2.0
  * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy of
diff --git a/test/unit-test/ota_utest.c b/test/unit-test/ota_utest.c
index d59e433e5..6b9ff91af 100644
--- a/test/unit-test/ota_utest.c
+++ b/test/unit-test/ota_utest.c
@@ -1,5 +1,5 @@
 /*
- * AWS IoT Over-the-air Update v3.1.0
+ * AWS IoT Over-the-air Update v3.2.0
  * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy of
diff --git a/test/unit-test/utest_helpers.c b/test/unit-test/utest_helpers.c
index c2c07ec61..40a7c57e4 100644
--- a/test/unit-test/utest_helpers.c
+++ b/test/unit-test/utest_helpers.c
@@ -1,5 +1,5 @@
 /*
- * AWS IoT Over-the-air Update v3.1.0
+ * AWS IoT Over-the-air Update v3.2.0
  * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy of
diff --git a/test/unit-test/utest_helpers.h b/test/unit-test/utest_helpers.h
index 7dae25e32..ac6b704c1 100644
--- a/test/unit-test/utest_helpers.h
+++ b/test/unit-test/utest_helpers.h
@@ -1,5 +1,5 @@
 /*
- * AWS IoT Over-the-air Update v3.1.0
+ * AWS IoT Over-the-air Update v3.2.0
  * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy of