diff --git a/build.gradle.kts b/build.gradle.kts
index db76547..7c210d5 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -4,7 +4,7 @@ plugins {
 }
 
 group = "nl.astraeus"
-version = "0.4.21"
+version = "0.4.23"
 
 repositories {
     maven { setUrl("https://dl.bintray.com/kotlin/kotlin-eap") }
diff --git a/src/commonMain/kotlin/nl/astraeus/css/properties/Measurement.kt b/src/commonMain/kotlin/nl/astraeus/css/properties/Measurement.kt
index 126658d..2ff402f 100644
--- a/src/commonMain/kotlin/nl/astraeus/css/properties/Measurement.kt
+++ b/src/commonMain/kotlin/nl/astraeus/css/properties/Measurement.kt
@@ -25,6 +25,7 @@ open class Measurement(
     fun pc(nr: Double) = nr.pc
     fun cm(nr: Int) = nr.cm
     fun cm(nr: Double) = nr.cm
+    fun fr(nr: Int) = nr.fr
   }
 }
 
@@ -64,6 +65,8 @@ val Int.pc: Measurement
   get() = Measurement("${this}pc")
 val Int.cm: Measurement
   get() = Measurement("${this}cm")
+val Int.fr: Measurement
+  get() = Measurement("${this}fr")
 
 fun Int.px(): Measurement = Measurement.px(this)