diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 81ee0bd2..68ce25a2 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,10 +1,10 @@
 {
-  "packages/abstractions": "1.15.0",
-  "packages/authentication/azure": "1.15.0",
-  "packages/http/httpx": "1.15.0",
-  "packages/serialization/json": "1.15.0",
-  "packages/serialization/form": "1.15.0",
-  "packages/serialization/text": "1.15.0",
-  "packages/serialization/multipart": "1.15.0",
-  "packages/bundle": "1.15.0"
+  "packages/abstractions": "1.16.0",
+  "packages/authentication/azure": "1.16.0",
+  "packages/http/httpx": "1.16.0",
+  "packages/serialization/json": "1.16.0",
+  "packages/serialization/form": "1.16.0",
+  "packages/serialization/text": "1.16.0",
+  "packages/serialization/multipart": "1.16.0",
+  "packages/bundle": "1.16.0"
 }
\ No newline at end of file
diff --git a/packages/abstractions/CHANGELOG.md b/packages/abstractions/CHANGELOG.md
index 6349a98e..f3066310 100644
--- a/packages/abstractions/CHANGELOG.md
+++ b/packages/abstractions/CHANGELOG.md
@@ -5,6 +5,14 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [1.16.0](https://github.com/microsoft/kiota-python/compare/microsoft-kiota-abstractions-v1.15.0...microsoft-kiota-abstractions-v1.16.0) (2026-10-21)
+
+
+### Features
+
+* **abstractions:** enhance HeadersCollection usability and dict interoperability ([745dfee](https://github.com/microsoft/kiota-python/commit/745dfee8b19e7edf92aa4917c2df3c4970abd6f2))
+* **abstractions:** enhance HeadersCollection usability and dict interoperability ([f4c60bd](https://github.com/microsoft/kiota-python/commit/f4c60bdb39717ae0d59f34fad221f2acd788bb9e)), closes [#208](https://github.com/microsoft/kiota-python/issues/208)
+
 ## [1.15.0](https://github.com/microsoft/kiota-python/compare/microsoft-kiota-abstractions-v1.14.4...microsoft-kiota-abstractions-v1.15.0) (2026-10-21)
 
 
diff --git a/packages/abstractions/pyproject.toml b/packages/abstractions/pyproject.toml
index 22c0cd74..54e0a06c 100644
--- a/packages/abstractions/pyproject.toml
+++ b/packages/abstractions/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "flit_core.buildapi"
 
 [project]
 name = "microsoft-kiota-abstractions"
-version = "1.15.0"
+version = "1.16.0"
 description = "Core abstractions for kiota generated libraries in Python"
 authors = [{name = "Microsoft", email = "graphtooling+python@microsoft.com"}]
 license = {text = "MIT"}
diff --git a/packages/authentication/azure/CHANGELOG.md b/packages/authentication/azure/CHANGELOG.md
index b2b5406c..d711e732 100644
--- a/packages/authentication/azure/CHANGELOG.md
+++ b/packages/authentication/azure/CHANGELOG.md
@@ -5,6 +5,13 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [1.16.0](https://github.com/microsoft/kiota-python/compare/microsoft-kiota-authentication-azure-v1.15.0...microsoft-kiota-authentication-azure-v1.16.0) (2026-10-21)
+
+
+### Miscellaneous Chores
+
+* **microsoft-kiota-authentication-azure:** Synchronize microsoft-kiota versions
+
 ## [1.15.0](https://github.com/microsoft/kiota-python/compare/microsoft-kiota-authentication-azure-v1.14.4...microsoft-kiota-authentication-azure-v1.15.0) (2026-10-21)
 
 
diff --git a/packages/authentication/azure/pyproject.toml b/packages/authentication/azure/pyproject.toml
index 01c6ce5d..6c470606 100644
--- a/packages/authentication/azure/pyproject.toml
+++ b/packages/authentication/azure/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "flit_core.buildapi"
 
 [project]
 name = "microsoft-kiota-authentication-azure"
-version = "1.15.0"
+version = "1.16.0"
 description = "Core abstractions for kiota generated libraries in Python"
 authors = [{name = "Microsoft", email = "graphtooling+python@microsoft.com"}]
 license = {text = "MIT"}
diff --git a/packages/bundle/CHANGELOG.md b/packages/bundle/CHANGELOG.md
index bb7397ce..b3ce5351 100644
--- a/packages/bundle/CHANGELOG.md
+++ b/packages/bundle/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [1.16.0](https://github.com/microsoft/kiota-python/compare/microsoft-kiota-bundle-v1.15.0...microsoft-kiota-bundle-v1.16.0) (2026-10-21)
+
+
+### Miscellaneous Chores
+
+* **microsoft-kiota-bundle:** Synchronize microsoft-kiota versions
+
 ## [1.15.0](https://github.com/microsoft/kiota-python/compare/microsoft-kiota-bundle-v1.14.4...microsoft-kiota-bundle-v1.15.0) (2026-10-21)
 
 
diff --git a/packages/bundle/pyproject.toml b/packages/bundle/pyproject.toml
index eb23df64..ed39dd3b 100644
--- a/packages/bundle/pyproject.toml
+++ b/packages/bundle/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "flit_core.buildapi"
 
 [project]
 name = "microsoft-kiota-bundle"
-version = "1.15.0"
+version = "1.16.0"
 description = "Bundle package for kiota generated libraries in Python"
 authors = [{name = "Microsoft", email = "graphtooling+python@microsoft.com"}]
 license = {text = "MIT"}
diff --git a/packages/http/httpx/CHANGELOG.md b/packages/http/httpx/CHANGELOG.md
index 391464a1..a3d6b56b 100644
--- a/packages/http/httpx/CHANGELOG.md
+++ b/packages/http/httpx/CHANGELOG.md
@@ -5,6 +5,17 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [1.16.0](https://github.com/microsoft/kiota-python/compare/microsoft-kiota-http-v1.15.0...microsoft-kiota-http-v1.16.0) (2026-10-21)
+
+
+### Bug Fixes
+
+* **http:** handle null request, keep span open over call, and isolate options in HeadersInspectionHandler ([5dc3d01](https://github.com/microsoft/kiota-python/commit/5dc3d01eb1d86bb89ba10bd0e56f1292b9732ab7))
+* **http:** handle null request, keep span open over call, and isolate options in HeadersInspectionHandler ([1a7350a](https://github.com/microsoft/kiota-python/commit/1a7350a6a9a9efdaa5ee93f4dcf83d1edd15cd4e))
+* **http:** improve parameters name decoding precision and span lifecycle ([806a09d](https://github.com/microsoft/kiota-python/commit/806a09d5f0ab65247676b3cdc317785a5766728f))
+* **http:** improve parameters name decoding precision and span lifecycle ([f654760](https://github.com/microsoft/kiota-python/commit/f654760efcbae310be6ca23c2868fe7b7f85776f))
+* **http:** preserve repeated single value headers and assert span open during transport ([7f2763c](https://github.com/microsoft/kiota-python/commit/7f2763c5ed98b9285a9a9300e4aae098edd8f715))
+
 ## [1.15.0](https://github.com/microsoft/kiota-python/compare/microsoft-kiota-http-v1.14.4...microsoft-kiota-http-v1.15.0) (2026-10-21)
 
 
diff --git a/packages/http/httpx/pyproject.toml b/packages/http/httpx/pyproject.toml
index f9e7dcc7..101fe113 100644
--- a/packages/http/httpx/pyproject.toml
+++ b/packages/http/httpx/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "flit_core.buildapi"
 
 [project]
 name = "microsoft-kiota-http"
-version = "1.15.0"
+version = "1.16.0"
 description = "Core abstractions for kiota generated libraries in Python"
 authors = [{name = "Microsoft", email = "graphtooling+python@microsoft.com"}]
 license = {text = "MIT"}
diff --git a/packages/serialization/form/CHANGELOG.md b/packages/serialization/form/CHANGELOG.md
index f32010ec..7944bef7 100644
--- a/packages/serialization/form/CHANGELOG.md
+++ b/packages/serialization/form/CHANGELOG.md
@@ -11,6 +11,13 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Changed
 
+## [1.16.0](https://github.com/microsoft/kiota-python/compare/microsoft-kiota-serialization-form-v1.15.0...microsoft-kiota-serialization-form-v1.16.0) (2026-10-21)
+
+
+### Miscellaneous Chores
+
+* **microsoft-kiota-serialization-form:** Synchronize microsoft-kiota versions
+
 ## [1.15.0](https://github.com/microsoft/kiota-python/compare/microsoft-kiota-serialization-form-v1.14.4...microsoft-kiota-serialization-form-v1.15.0) (2026-10-21)
 
 
diff --git a/packages/serialization/form/pyproject.toml b/packages/serialization/form/pyproject.toml
index 0d33d9c7..bfa9cc58 100644
--- a/packages/serialization/form/pyproject.toml
+++ b/packages/serialization/form/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "flit_core.buildapi"
 
 [project]
 name = "microsoft-kiota-serialization-form"
-version = "1.15.0"
+version = "1.16.0"
 description = "Core abstractions for kiota generated libraries in Python"
 authors = [{name = "Microsoft", email = "graphtooling+python@microsoft.com"}]
 license = {text = "MIT"}
diff --git a/packages/serialization/json/CHANGELOG.md b/packages/serialization/json/CHANGELOG.md
index ac3b0970..af542d59 100644
--- a/packages/serialization/json/CHANGELOG.md
+++ b/packages/serialization/json/CHANGELOG.md
@@ -5,6 +5,13 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [1.16.0](https://github.com/microsoft/kiota-python/compare/microsoft-kiota-serialization-json-v1.15.0...microsoft-kiota-serialization-json-v1.16.0) (2026-10-21)
+
+
+### Miscellaneous Chores
+
+* **microsoft-kiota-serialization-json:** Synchronize microsoft-kiota versions
+
 ## [1.15.0](https://github.com/microsoft/kiota-python/compare/microsoft-kiota-serialization-json-v1.14.4...microsoft-kiota-serialization-json-v1.15.0) (2026-10-21)
 
 
diff --git a/packages/serialization/json/pyproject.toml b/packages/serialization/json/pyproject.toml
index 73d6401c..0a8b71ac 100644
--- a/packages/serialization/json/pyproject.toml
+++ b/packages/serialization/json/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "flit_core.buildapi"
 
 [project]
 name = "microsoft-kiota-serialization-json"
-version = "1.15.0"
+version = "1.16.0"
 description = "Core abstractions for kiota generated libraries in Python"
 authors = [{name = "Microsoft", email = "graphtooling+python@microsoft.com"}]
 license = {text = "MIT"}
diff --git a/packages/serialization/multipart/CHANGELOG.md b/packages/serialization/multipart/CHANGELOG.md
index df3e361f..655a0186 100644
--- a/packages/serialization/multipart/CHANGELOG.md
+++ b/packages/serialization/multipart/CHANGELOG.md
@@ -9,6 +9,13 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Changed
 
+## [1.16.0](https://github.com/microsoft/kiota-python/compare/microsoft-kiota-serialization-multipart-v1.15.0...microsoft-kiota-serialization-multipart-v1.16.0) (2026-10-21)
+
+
+### Miscellaneous Chores
+
+* **microsoft-kiota-serialization-multipart:** Synchronize microsoft-kiota versions
+
 ## [1.15.0](https://github.com/microsoft/kiota-python/compare/microsoft-kiota-serialization-multipart-v1.14.4...microsoft-kiota-serialization-multipart-v1.15.0) (2026-10-21)
 
 
diff --git a/packages/serialization/multipart/pyproject.toml b/packages/serialization/multipart/pyproject.toml
index 3c510dc5..ff4dd901 100644
--- a/packages/serialization/multipart/pyproject.toml
+++ b/packages/serialization/multipart/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "flit_core.buildapi"
 
 [project]
 name = "microsoft-kiota-serialization-multipart"
-version = "1.15.0"
+version = "1.16.0"
 description = "Core abstractions for kiota generated libraries in Python"
 authors = [{name = "Microsoft", email = "graphtooling+python@microsoft.com"}]
 license = {text = "MIT"}
diff --git a/packages/serialization/text/CHANGELOG.md b/packages/serialization/text/CHANGELOG.md
index e87f643f..97796f76 100644
--- a/packages/serialization/text/CHANGELOG.md
+++ b/packages/serialization/text/CHANGELOG.md
@@ -5,6 +5,13 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [1.16.0](https://github.com/microsoft/kiota-python/compare/microsoft-kiota-serialization-text-v1.15.0...microsoft-kiota-serialization-text-v1.16.0) (2026-10-21)
+
+
+### Miscellaneous Chores
+
+* **microsoft-kiota-serialization-text:** Synchronize microsoft-kiota versions
+
 ## [1.15.0](https://github.com/microsoft/kiota-python/compare/microsoft-kiota-serialization-text-v1.14.4...microsoft-kiota-serialization-text-v1.15.0) (2026-10-21)
 
 
diff --git a/packages/serialization/text/pyproject.toml b/packages/serialization/text/pyproject.toml
index 6c58bf5f..dc0b30c6 100644
--- a/packages/serialization/text/pyproject.toml
+++ b/packages/serialization/text/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "flit_core.buildapi"
 
 [project]
 name = "microsoft-kiota-serialization-text"
-version = "1.15.0"
+version = "1.16.0"
 description = "Core abstractions for kiota generated libraries in Python"
 authors = [{name = "Microsoft", email = "graphtooling+python@microsoft.com"}]
 license = {text = "MIT"}