diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index eac9791..cd160c9 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -1,3 +1,6 @@
+import java.util.Properties
+import java.io.FileInputStream
+
 plugins {
     alias(libs.plugins.android.application)
     alias(libs.plugins.kotlin.compose)
@@ -5,6 +8,13 @@ plugins {
     alias(libs.plugins.hilt)
 }
 
+val keystorePropertiesFile = rootProject.file("key.properties")
+val keystoreProperties = Properties().apply {
+    if (keystorePropertiesFile.exists()) {
+        load(FileInputStream(keystorePropertiesFile))
+    }
+}
+
 android {
     namespace = "de.jeanlucmakiola.calendula"
     compileSdk = 37
@@ -19,6 +29,17 @@ android {
         testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
     }
 
+    signingConfigs {
+        if (keystorePropertiesFile.exists()) {
+            create("release") {
+                keyAlias = keystoreProperties["keyAlias"] as String
+                keyPassword = keystoreProperties["keyPassword"] as String
+                storeFile = file(keystoreProperties["storeFile"] as String)
+                storePassword = keystoreProperties["storePassword"] as String
+            }
+        }
+    }
+
     buildTypes {
         release {
             isMinifyEnabled = true
@@ -27,6 +48,9 @@ android {
                 getDefaultProguardFile("proguard-android-optimize.txt"),
                 "proguard-rules.pro"
             )
+            if (keystorePropertiesFile.exists()) {
+                signingConfig = signingConfigs.getByName("release")
+            }
         }
         debug {
             applicationIdSuffix = ".debug"