diff --git a/build.gradle.kts b/build.gradle.kts
index 281b392..644ea60 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -12,6 +12,10 @@ repositories {
     mavenCentral()
 }
 
+dependencies {
+    implementation(group="org.apache", name="commons-cli", version="1.5.0")
+}
+
 fun versionBanner(): String {
     val os = ByteArrayOutputStream()
     val devNull = OutputStream.nullOutputStream()