diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5d84c3398e..cdd3cbf135 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,7 +4,9 @@ All notable changes to this project will be documented in this file. Take a look
 
 **Warning:** Features marked as *experimental* may change or be removed in a future release without notice. Use with caution.
 
-## [Unreleased]
+<!-- ## [Unreleased] -->
+
+## [3.4.0] - 2026-09-11
 
 :warning: The minimum supported Android version is now API 24 (Android 7.0).
 
@@ -1081,3 +1083,4 @@ progression. Now if no reading progression is set, the `effectiveReadingProgress
 [3.1.2]: https://github.com/readium/kotlin-toolkit/compare/3.1.1...3.1.2
 [3.2.0]: https://github.com/readium/kotlin-toolkit/compare/3.1.2...3.2.0
 [3.3.0]: https://github.com/readium/kotlin-toolkit/compare/3.2.0...3.3.0
+[3.4.0]: https://github.com/readium/kotlin-toolkit/compare/3.3.0...3.4.0
diff --git a/README.md b/README.md
index 4be73e9610..b85a873d2d 100644
--- a/README.md
+++ b/README.md
@@ -88,6 +88,7 @@ Guides are available to help you make the most of the toolkit.
 | Readium | Android min SDK | Android compile SDK | Kotlin compiler (✻) | Gradle (✻) |
 |---------|-----------------|---------------------|---------------------|------------|
 | `develop` | 24 | 37 | 2.4.20 | 9.7.0 |
+| 3.4.0 | 24 | 37 | 2.4.20 | 9.7.0 |
 | 3.2.0 | 23 | 36 | 2.3.20 | 9.1.0 |
 | 3.1.2 | 23 | 36 | 2.1.21 | 8.14.1 |
 | 3.1.0 | 21 | 35 | 2.1.20 | 8.13 |
@@ -102,7 +103,7 @@ Readium modules are distributed with [Maven Central](https://search.maven.org/se
 
 ```groovy
 buildscript {
-    ext.readium_version = '3.3.0'
+    ext.readium_version = '3.4.0'
 }
 
 allprojects {
diff --git a/docs/migration-guide.md b/docs/migration-guide.md
index f3276a423f..99a27559d1 100644
--- a/docs/migration-guide.md
+++ b/docs/migration-guide.md
@@ -2,7 +2,9 @@
 
 All migration steps necessary in reading apps to upgrade to major versions of the Kotlin Readium toolkit will be documented in this file.
 
-## Unreleased
+<!-- ## Unreleased -->
+
+## 3.4.0
 
 ### Breaking changes with the PDFium adapter
 
diff --git a/gradle.properties b/gradle.properties
index ca0e374a99..2f189c7df5 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -6,7 +6,7 @@
 # http://www.gradle.org/docs/current/userguide/build_environment.html
 
 pom.groupId=org.readium.kotlin-toolkit
-pom.version=3.3.0
+pom.version=3.4.0
 
 android.minSdk=24
 android.compileSdk=37
diff --git a/test-app/build.gradle.kts b/test-app/build.gradle.kts
index 73756ba0d6..f1e4058b9e 100644
--- a/test-app/build.gradle.kts
+++ b/test-app/build.gradle.kts
@@ -20,7 +20,7 @@ android {
 
         applicationId = "org.readium.r2reader"
 
-        versionName = "3.3.0"
+        versionName = "3.4.0"
         versionCode = 1
 
         testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"