diff --git a/AGENTS.md b/AGENTS.md
index f70f0ea..6b18b6a 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -16,8 +16,8 @@ Detailed guides live as Agent Skills under `.claude/skills/` ([SKILL.md format](
 Run the JAR directly:
 
 ```bash
-java -jar build/libs/gittally-0.1.0-SNAPSHOT.jar --help
-java -jar build/libs/gittally-0.1.0-SNAPSHOT.jar init
+java -jar build/libs/gittally.jar --help
+java -jar build/libs/gittally.jar init
 ```
 
 `ktlintFormat` must be run before `build` passes — the formatter is enforced as part of the `check` lifecycle.
diff --git a/build.gradle.kts b/build.gradle.kts
index c2aa1e8..4973998 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -9,7 +9,7 @@ plugins {
 }
 
 group = "de.hoennig"
-version = "0.1.0-SNAPSHOT"
+version = "0.9.0"
 
 java {
     toolchain {
@@ -63,6 +63,12 @@ springBoot {
     }
 }
 
+tasks.bootJar {
+    // version-free jar name, so docs and scripts never contain the version;
+    // the version itself stays available via BuildProperties (UI footer, --version)
+    archiveFileName = "gittally.jar"
+}
+
 kotlin {
     compilerOptions {
         freeCompilerArgs.addAll("-Xjsr305=strict")
diff --git a/docs/GitTally-Konzept.md b/docs/GitTally-Konzept.md
index a083e57..29dbbd5 100644
--- a/docs/GitTally-Konzept.md
+++ b/docs/GitTally-Konzept.md
@@ -161,13 +161,13 @@ Ob ein neuer Commit den laufenden Build seines Branches stattdessen abbrechen so
 ### Initialisierung
 
 ```bash
-java -jar build/libs/gittally-0.1.0-SNAPSHOT.jar init
+java -jar build/libs/gittally.jar init
 ```
 
 ### Serverstart
 
 ```bash
-java -jar build/libs/gittally-0.1.0-SNAPSHOT.jar server
+java -jar build/libs/gittally.jar server
 ```
 
 Für den Dauerbetrieb als systemd-User-Service siehe [deployment.md](deployment.md) (`init --systemd`).
@@ -175,8 +175,8 @@ Für den Dauerbetrieb als systemd-User-Service siehe [deployment.md](deployment.
 ### Konfigurationsanzeige
 
 ```bash
-java -jar build/libs/gittally-0.1.0-SNAPSHOT.jar config:print
-java -jar build/libs/gittally-0.1.0-SNAPSHOT.jar config:print --full
+java -jar build/libs/gittally.jar config:print
+java -jar build/libs/gittally.jar config:print --full
 ```
 
 ## Erweiterungen
diff --git a/docs/bootstrapping.md b/docs/bootstrapping.md
index 75a3725..8deb8e8 100644
--- a/docs/bootstrapping.md
+++ b/docs/bootstrapping.md
@@ -23,7 +23,7 @@ First, in `<gittally-root>`, build the application to generate the executable JA
 Then run `init` using the generated JAR (not the `-plain.jar`):
 
 ```bash
-java -jar <gittally-root>/build/libs/gittally-0.1.0-SNAPSHOT.jar init
+java -jar <gittally-root>/build/libs/gittally.jar init
 ```
 
 `init` performs the following steps in order:
@@ -120,11 +120,11 @@ Until then, a Java runtime must be available on the host.
 2. Review `.gittally.yml` and add/adjust any branch build settings.
 3. Verify the effective configuration:
    ```bash
-   java -jar build/libs/gittally-0.1.0-SNAPSHOT.jar config:print --full
+   java -jar build/libs/gittally.jar config:print --full
    ```
 4. Start the server:
    ```bash
-   java -jar build/libs/gittally-0.1.0-SNAPSHOT.jar server
+   java -jar build/libs/gittally.jar server
    ```
 5. For permanent operation, install the systemd user service described in [deployment.md](deployment.md).
 
diff --git a/docs/configuration.md b/docs/configuration.md
index 7a2dfc0..16c990a 100644
--- a/docs/configuration.md
+++ b/docs/configuration.md
@@ -14,8 +14,8 @@ The repo install config (`.git/gittally/.gittally.yml`) wins on any key present
 ## Inspect the Effective Config
 
 ```bash
-java -jar build/libs/gittally-0.1.0-SNAPSHOT.jar config:print         # only explicitly set values
-java -jar build/libs/gittally-0.1.0-SNAPSHOT.jar config:print --full  # all values including defaults
+java -jar build/libs/gittally.jar config:print         # only explicitly set values
+java -jar build/libs/gittally.jar config:print --full  # all values including defaults
 ```
 
 ## `.gittally.yml`
diff --git a/docs/deployment.md b/docs/deployment.md
index a32331c..d5ad3b1 100644
--- a/docs/deployment.md
+++ b/docs/deployment.md
@@ -19,14 +19,14 @@ Build the executable jar once:
 
 ```bash
 ./gradlew build
-ls build/libs/gittally-*-SNAPSHOT.jar
+ls build/libs/gittally.jar
 ```
 
 Copy the jar to a stable path outside any watched repository, by convention `~/bin/gittally.jar`:
 
 ```bash
 mkdir -p ~/bin
-cp build/libs/gittally-0.1.0-SNAPSHOT.jar ~/bin/gittally.jar
+cp build/libs/gittally.jar ~/bin/gittally.jar
 ```
 
 The systemd unit generated below points at the jar that was used to run `init --systemd`.
diff --git a/docs/examples/setup-gittally-selfhost.sh b/docs/examples/setup-gittally-selfhost.sh
index 249e973..cdffaa0 100755
--- a/docs/examples/setup-gittally-selfhost.sh
+++ b/docs/examples/setup-gittally-selfhost.sh
@@ -21,8 +21,7 @@ ORIGIN_URL="${ORIGIN_URL:-$(git -C "$DEV_CHECKOUT" remote get-url origin)}"
 # 2. Dedicated clone: builds run in worktrees under its .git/gittally/worktrees,
 #    completely separate from your dev checkout.
 mkdir -p "$INSTALL_DIR"
-JAR=$(ls "$DEV_CHECKOUT"/build/libs/gittally-*.jar | grep -v -- '-plain' | head -1)
-cp "$JAR" "$INSTALL_DIR/gittally.jar"
+cp "$DEV_CHECKOUT/build/libs/gittally.jar" "$INSTALL_DIR/gittally.jar"
 if [ ! -d "$INSTALL_DIR/repo/.git" ]; then
     git clone "$ORIGIN_URL" "$INSTALL_DIR/repo"
 fi
diff --git a/docs/examples/setup-gittally-testserver.sh b/docs/examples/setup-gittally-testserver.sh
index 8e0b6ed..85698dd 100755
--- a/docs/examples/setup-gittally-testserver.sh
+++ b/docs/examples/setup-gittally-testserver.sh
@@ -24,8 +24,7 @@ DEV_CHECKOUT=$(git rev-parse --show-toplevel)
 # 1. Build the GitTally jar.
 (cd "$DEV_CHECKOUT" && ./gradlew --console=plain build)
 mkdir -p "$INSTALL_DIR"
-JAR=$(ls "$DEV_CHECKOUT"/build/libs/gittally-*.jar | grep -v -- '-plain' | head -1)
-cp "$JAR" "$INSTALL_DIR/gittally.jar"
+cp "$DEV_CHECKOUT/build/libs/gittally.jar" "$INSTALL_DIR/gittally.jar"
 
 # 2. Scratch bare origin plus a "work" clone for triggering builds by pushing.
 if [ ! -d "$INSTALL_DIR/origin.git" ]; then
diff --git a/src/main/kotlin/de/hoennig/gittally/GitTallyCommand.kt b/src/main/kotlin/de/hoennig/gittally/GitTallyCommand.kt
index 56537a1..5ab27fc 100644
--- a/src/main/kotlin/de/hoennig/gittally/GitTallyCommand.kt
+++ b/src/main/kotlin/de/hoennig/gittally/GitTallyCommand.kt
@@ -6,6 +6,8 @@ import de.hoennig.gittally.commands.InitCommand
 import de.hoennig.gittally.commands.RetryCommand
 import de.hoennig.gittally.commands.ServerCommand
 import de.hoennig.gittally.commands.StatusCommand
+import org.springframework.beans.factory.ObjectProvider
+import org.springframework.boot.info.BuildProperties
 import org.springframework.stereotype.Component
 import picocli.CommandLine
 import picocli.CommandLine.Command
@@ -22,8 +24,22 @@ import picocli.CommandLine.Command
         ConfigPrintCommand::class,
     ],
     mixinStandardHelpOptions = true,
+    versionProvider = BuildPropertiesVersionProvider::class,
     description = ["Lightweight, declarative CI/CD system"],
 )
 class GitTallyCommand : Runnable {
     override fun run(): Unit = throw CommandLine.ParameterException(CommandLine(this), "Specify a subcommand")
 }
+
+/**
+ * Feeds `--version` from the Gradle project version via the `build-info`
+ * [BuildProperties] — the same source as the web UI footer, so the version is
+ * declared only in `build.gradle.kts`. Resolved through picocli's Spring factory;
+ * `dev` when running from classes (IDE, tests) where no build info exists.
+ */
+@Component
+class BuildPropertiesVersionProvider(
+    private val buildProperties: ObjectProvider<BuildProperties>,
+) : CommandLine.IVersionProvider {
+    override fun getVersion(): Array<String> = arrayOf("GitTally v${buildProperties.getIfAvailable()?.version ?: "dev"}")
+}