diff --git a/README.md b/README.md
index b7604a9..939acb8 100644
--- a/README.md
+++ b/README.md
@@ -65,6 +65,8 @@ $ apkc run
 ....
 ```
 
+To build APK with custom key store run `apkc build --keystore "/path/to/keystore.jks" --storepass "password" --keyalias "alias"`.
+
 To build AAB run `apkc build --aab`. Output file will be at `build/app.{apk/aab}`.
 
 You can add external jar dependencies to `myapp/jar` directory and native libs to `myapp/lib` in appropriate architecture sub directories.
diff --git a/apk.go b/apk.go
index 356966a..66426e1 100644
--- a/apk.go
+++ b/apk.go
@@ -17,10 +17,10 @@ func alignAPK() {
 }
 
 // signAPK signs apk with jarsigner and default debug keys
-func signAPK() {
+func signAPK(keyStore, storePass, keyAlias *string) {
 	LogI("build", "signing app")
 
-	cmd := exec.Command(jarsignerPath, "-verbose", "-sigalg", "SHA1withRSA", "-digestalg", "SHA1", "-storepass", "android", "-keystore", keyStorePath, filepath.Join("build", "bundle.zip"), "androiddebugkey")
+	cmd := exec.Command(jarsignerPath, "-verbose", "-sigalg", "SHA1withRSA", "-digestalg", "SHA1", "-storepass", *storePass, "-keystore", *keyStore, filepath.Join("build", "bundle.zip"), *keyAlias)
 	out, err := cmd.CombinedOutput()
 	if err != nil {
 		LogF("build", string(out))
diff --git a/build.go b/build.go
index 321176e..4e42be4 100644
--- a/build.go
+++ b/build.go
@@ -13,7 +13,12 @@ import (
 // build compiles all the source code and bundles into apk file with dependencies
 func build() {
 	buildCmd := flag.NewFlagSet("build", flag.ExitOnError)
+
 	useAAB := buildCmd.Bool("aab", false, "build aab instead of apk")
+	keyStore := buildCmd.String("keystore", keyStorePath, "path to keystore")
+	storePass := buildCmd.String("storepass", "android", "keystore password")
+	keyAlias := buildCmd.String("keyalias", "androiddebugkey", "key alias to use")
+
 	buildCmd.Parse(os.Args[2:])
 
 	prepare()
@@ -25,7 +30,7 @@ func build() {
 	if *useAAB {
 		buildAAB()
 	} else {
-		signAPK()
+		signAPK(keyStore, storePass, keyAlias)
 		alignAPK()
 	}
 }