diff --git a/gradle.properties b/gradle.properties
index 34ff5a3..ff9271c 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -4,7 +4,7 @@ kotlin.code.style=official
 specifyKotlinAsDependency=false
 
 projectGroup=ru.dbotthepony.kommons
-projectVersion=2.7.2
+projectVersion=2.7.3
 
 guavaDepVersion=33.0.0
 gsonDepVersion=2.8.9
diff --git a/src/main/kotlin/ru/dbotthepony/kommons/util/KOptional.kt b/src/main/kotlin/ru/dbotthepony/kommons/util/KOptional.kt
index 37fe34b..42b1836 100644
--- a/src/main/kotlin/ru/dbotthepony/kommons/util/KOptional.kt
+++ b/src/main/kotlin/ru/dbotthepony/kommons/util/KOptional.kt
@@ -5,6 +5,7 @@ import java.util.function.Supplier
 fun <T> KOptional(value: T) = KOptional.of(value)
 fun KOptional(value: Boolean) = KOptional.of(value)
 fun KOptional(value: Boolean?) = KOptional.of(value)
+fun <T> KOptional() = KOptional.empty<T>()
 
 /**
  * [java.util.Optional] supporting nulls
@@ -49,6 +50,14 @@ class KOptional<T> private constructor(private val _value: T, val isPresent: Boo
 		}
 	}
 
+	inline fun <R> flatMap(block: (T) -> KOptional<R>): KOptional<R> {
+		if (isPresent) {
+			return block.invoke(value)
+		} else {
+			return empty()
+		}
+	}
+
 	@Suppress("NOTHING_TO_INLINE")
 	inline fun orElse(value: T): T {
 		if (isPresent) {