diff --git a/CHANGELOG.md b/CHANGELOG.md
index b1ceba3..4e194d5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,7 @@ All notable changes to this project will be documented in this file. This change
 
 ## [Unreleased]
 
+## [0.1.26.0-SNAPSHOT] - 2026-02-20
 ### Added (upstream PR #510 sync)
 - `:client-name` option for `create-session` and `resume-session` — identifies the application using the SDK, included in the User-Agent header for API requests. Forwarded as `clientName` on the wire (upstream PR #510).
 
@@ -202,7 +203,8 @@ All notable changes to this project will be documented in this file. This change
 - org.clojure/spec.alpha 0.5.238
 - cheshire/cheshire 5.13.0
 
-[Unreleased]: https://github.com/copilot-community-sdk/copilot-sdk-clojure/compare/v0.1.25.1...HEAD
+[Unreleased]: https://github.com/copilot-community-sdk/copilot-sdk-clojure/compare/v0.1.26.0-SNAPSHOT...HEAD
+[0.1.26.0-SNAPSHOT]: https://github.com/copilot-community-sdk/copilot-sdk-clojure/compare/v0.1.25.1...v0.1.26.0-SNAPSHOT
 [0.1.25.1]: https://github.com/copilot-community-sdk/copilot-sdk-clojure/compare/v0.1.25.0...v0.1.25.1
 [0.1.25.0]: https://github.com/copilot-community-sdk/copilot-sdk-clojure/compare/0.1.0...v0.1.25.0
 [0.1.0]: https://github.com/copilot-community-sdk/copilot-sdk-clojure/releases/tag/0.1.0
diff --git a/README.md b/README.md
index 16cb5e5..f57773c 100644
--- a/README.md
+++ b/README.md
@@ -26,11 +26,11 @@ Add to your `deps.edn`:
 
 ```clojure
 ;; From Maven Central
-io.github.copilot-community-sdk/copilot-sdk-clojure {:mvn/version "0.1.25.5"}
+io.github.copilot-community-sdk/copilot-sdk-clojure {:mvn/version "0.1.26.0-SNAPSHOT"}
 
 ;; Or git dependency
 io.github.copilot-community-sdk/copilot-sdk-clojure {:git/url "https://github.com/copilot-community-sdk/copilot-sdk-clojure.git"
-                              :git/sha "9e9c76a704322da632933aa4cdb606b5389a531a"}
+                              :git/sha "b3b788d9c43b3d97ab944f87d3806f34166324ab"}
 ```
 
 > **Note:** The Clojars artifact `net.clojars.krukow/copilot-sdk` is deprecated.
diff --git a/build.clj b/build.clj
index 8dd6b6b..dd349e3 100644
--- a/build.clj
+++ b/build.clj
@@ -7,7 +7,7 @@
   (:import [java.io File]))
 
 (def lib 'io.github.copilot-community-sdk/copilot-sdk-clojure)
-(def version "0.1.25.5")
+(def version "0.1.26.0-SNAPSHOT")
 (def class-dir "target/classes")
 
 (defn- try-sh