diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 4b39589..4c4ab2f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -19,6 +19,9 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+          fetch-tags: true
 
       - name: Set up JDK 17
         uses: actions/setup-java@v4
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index b449871..2e2cc03 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -18,6 +18,9 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+          fetch-tags: true
 
       - name: Set up JDK 17
         uses: actions/setup-java@v4
diff --git a/AGENTS.md b/AGENTS.md
index 0004bd4..87b125f 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -12,7 +12,7 @@ Toolchain: JDK 17, Android SDK platform 36 (`compileSdk`/`targetSdk`), `minSdk =
 - `./gradlew testDebugUnitTest` — unit tests (currently no test sources exist; CI runs the task anyway to catch new ones)
 - Single-module variants: `./gradlew :feature:timer:lintDebug`, `./gradlew :core:service:testDebugUnitTest`, etc.
 
-`versionCode` in `app/build.gradle.kts` follows the schema `major*100_000 + minor*1_000 + patch*10`; the last digit is reserved for hotfixes. Bump both `versionCode` and `versionName` together. Release tags named `v*` trigger `.github/workflows/release.yml`, which builds a signed APK and publishes a GitHub Release.
+Versioning is dynamic via the [axion-release](https://github.com/allegro/axion-release-plugin) plugin (applied at the root). `versionName` is derived from the latest `v*` git tag (`project.version`); `versionCode` is computed from that same tag version with the schema `major*100_000 + minor*1_000 + patch*10` (tag `v1.0.1` → `100010`), keeping it monotonic with releases published before dynamic versioning. Tags must be plain SemVer after the `v` prefix — axion-release fails the build on anything else (e.g. `v1.0.1.1`), so a hotfix is just the next patch tag. Don't hand-edit either field in `app/build.gradle.kts`. To cut a release, push a new `v<x.y.z>` tag — `.github/workflows/release.yml` builds a signed APK and publishes the GitHub Release. CI checkouts must use `fetch-depth: 0` so tags and full history are visible.
 
 ## Module architecture
 
diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index b585c85..31abde5 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -6,6 +6,17 @@ plugins {
     alias(libs.plugins.ksp)
 }
 
+// Schema: major * 100000 + minor * 1000 + patch * 10, derived from the axion-release tag
+// version so versionCode stays monotonic with already-published releases (v1.0.1 = 100010).
+// Axion only accepts SemVer tags (v<major>.<minor>.<patch>); a hotfix is the next patch tag.
+fun versionCodeFrom(version: String): Int {
+    val parts = version.substringBefore("-").split(".").map { it.toInt() }
+    require(parts.size == 3 && parts[1] <= 99 && parts[2] <= 99) {
+        "Cannot derive versionCode from version '$version'"
+    }
+    return parts[0] * 100_000 + parts[1] * 1_000 + parts[2] * 10
+}
+
 android {
     namespace = "dev.xitee.sleeptimer"
     compileSdk = 36
@@ -14,9 +25,8 @@ android {
         applicationId = "dev.xitee.sleeptimer"
         minSdk = 26
         targetSdk = 36
-        // Schema: major * 100000 + minor * 1000 + patch * 10 (last digit reserved for hotfixes)
-        versionCode = 1 * 100000 + 0 * 1000 + 1 * 10
-        versionName = "1.0.1"
+        versionCode = versionCodeFrom(project.version.toString())
+        versionName = project.version.toString()
     }
 
     signingConfigs {
diff --git a/build.gradle.kts b/build.gradle.kts
index a73cca7..43d18d2 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -5,4 +5,15 @@ plugins {
     alias(libs.plugins.kotlin.serialization) apply false
     alias(libs.plugins.hilt.android) apply false
     alias(libs.plugins.ksp) apply false
+    alias(libs.plugins.axion.release)
+}
+
+scmVersion {
+    tag {
+        prefix.set("v")
+    }
+}
+
+allprojects {
+    version = rootProject.scmVersion.version
 }
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 6eee6f9..b6a2402 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -12,6 +12,7 @@ androidxCoreKtx = "1.18.0"
 androidxActivityCompose = "1.13.0"
 kotlinxSerializationJson = "1.11.0"
 shizuku = "13.1.5"
+axionRelease = "1.18.16"
 
 [libraries]
 androidx-compose-bom = { group = "androidx.compose", name = "compose-bom", version.ref = "composeBom" }
@@ -49,3 +50,4 @@ kotlin-compose = { id = "org.jetbrains.kotlin.plugin.compose", version.ref = "ko
 kotlin-serialization = { id = "org.jetbrains.kotlin.plugin.serialization", version.ref = "kotlin" }
 hilt-android = { id = "com.google.dagger.hilt.android", version.ref = "hilt" }
 ksp = { id = "com.google.devtools.ksp", version.ref = "ksp" }
+axion-release = { id = "pl.allegro.tech.build.axion-release", version.ref = "axionRelease" }