diff --git a/.idea/kotlinc.xml b/.idea/kotlinc.xml
index 8d81632..fe63bb6 100644
--- a/.idea/kotlinc.xml
+++ b/.idea/kotlinc.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="KotlinJpsPluginSettings">
-    <option name="version" value="1.9.22" />
+    <option name="version" value="1.9.23" />
   </component>
 </project>
\ No newline at end of file
diff --git a/README.md b/README.md
index 67fba68..1335560 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,5 @@
 [![License (3-Clause BSD)](https://img.shields.io/badge/license-BSD%203--Clause-blue.svg?style=flat-square)](https://opensource.org/licenses/BSD-3-Clause)
-[![Kotlin](https://img.shields.io/badge/kotlin-1.9.21-7f52ff)](https://kotlinlang.org/)
+[![Kotlin](https://img.shields.io/badge/kotlin-1.9.24-7f52ff)](https://kotlinlang.org/)
 [![bld](https://img.shields.io/badge/1.9.1-FA9052?label=bld&labelColor=2392FF)](https://rife2.com/bld)
 [![Release](https://img.shields.io/github/release/ethauvin/cryptoprice.svg)](https://github.com/ethauvin/cryptoprice/releases/latest)
 [![Maven Central](https://img.shields.io/maven-central/v/net.thauvin.erik/cryptoprice)](https://central.sonatype.com/artifact/net.thauvin.erik/cryptoprice)
diff --git a/examples/bld/lib/bld/bld-wrapper.properties b/examples/bld/lib/bld/bld-wrapper.properties
index 58bc83c..113b890 100644
--- a/examples/bld/lib/bld/bld-wrapper.properties
+++ b/examples/bld/lib/bld/bld-wrapper.properties
@@ -1,6 +1,6 @@
 bld.downloadExtensionJavadoc=false
 bld.downloadExtensionSources=true
-bld.extensions=com.uwyn.rife2:bld-kotlin:0.9.1
+bld.extensions=com.uwyn.rife2:bld-kotlin:0.9.4
 bld.repositories=MAVEN_LOCAL,MAVEN_CENTRAL,RIFE2_SNAPSHOTS,RIFE2_RELEASES
 bld.downloadLocation=
 bld.sourceDirectories=
diff --git a/examples/gradle/build.gradle.kts b/examples/gradle/build.gradle.kts
index 141b2a8..2f16e60 100644
--- a/examples/gradle/build.gradle.kts
+++ b/examples/gradle/build.gradle.kts
@@ -3,7 +3,7 @@ import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
 plugins {
     id("application")
     id("com.github.ben-manes.versions") version "0.51.0"
-    kotlin("jvm") version "1.9.22"
+    kotlin("jvm") version "1.9.24"
 }
 
 defaultTasks(ApplicationPlugin.TASK_RUN_NAME)
diff --git a/lib/bld/bld-wrapper.properties b/lib/bld/bld-wrapper.properties
index e0b0a20..1e96505 100644
--- a/lib/bld/bld-wrapper.properties
+++ b/lib/bld/bld-wrapper.properties
@@ -1,8 +1,8 @@
 bld.downloadExtensionJavadoc=false
 bld.downloadExtensionSources=true
 bld.extension.jacoco=com.uwyn.rife2:bld-jacoco-report:0.9.3
-bld.extensions=com.uwyn.rife2:bld-kotlin:0.9.1
 bld.extension-detekt=com.uwyn.rife2:bld-detekt:0.9.2
+bld.extensions=com.uwyn.rife2:bld-kotlin:0.9.4
 bld.repositories=MAVEN_LOCAL,MAVEN_CENTRAL,RIFE2_SNAPSHOTS,RIFE2_RELEASES
 bld.downloadLocation=
 bld.sourceDirectories=
diff --git a/pom.xml b/pom.xml
index 45f0c64..522013e 100644
--- a/pom.xml
+++ b/pom.xml
@@ -18,7 +18,7 @@
     <dependency>
       <groupId>org.jetbrains.kotlin</groupId>
       <artifactId>kotlin-stdlib</artifactId>
-      <version>1.9.22</version>
+      <version>1.9.23</version>
       <scope>compile</scope>
     </dependency>
     <dependency>
diff --git a/src/bld/java/net/thauvin/erik/crypto/CryptoPriceBuild.java b/src/bld/java/net/thauvin/erik/crypto/CryptoPriceBuild.java
index c564a80..70ec84b 100644
--- a/src/bld/java/net/thauvin/erik/crypto/CryptoPriceBuild.java
+++ b/src/bld/java/net/thauvin/erik/crypto/CryptoPriceBuild.java
@@ -24,6 +24,7 @@ import static rife.bld.dependencies.Scope.compile;
 import static rife.bld.dependencies.Scope.test;
 
 public class CryptoPriceBuild extends Project {
+    final File srcMainKotlin = new File(srcMainDirectory(), "kotlin");
     public CryptoPriceBuild() {
         pkg = "net.thauvin.erik.crypto";
         name = "cryptoprice";
@@ -36,7 +37,7 @@ public class CryptoPriceBuild extends Project {
         autoDownloadPurge = true;
         repositories = List.of(MAVEN_LOCAL, MAVEN_CENTRAL);
 
-        final var kotlin = version(1, 9, 22);
+        final var kotlin = version(1, 9, 24);
         scope(compile)
                 .include(dependency("org.jetbrains.kotlin", "kotlin-stdlib", kotlin))
                 .include(dependency("org.json", "json", "20240205"))
@@ -78,7 +79,7 @@ public class CryptoPriceBuild extends Project {
                 .signKey(property("sign.key"))
                 .signPassphrase(property("sign.passphrase"));
 
-        jarSourcesOperation().sourceDirectories(new File(srcMainDirectory(), "kotlin"));
+        jarSourcesOperation().sourceDirectories(srcMainKotlin);
     }
 
     public static void main(final String[] args) {
@@ -113,6 +114,7 @@ public class CryptoPriceBuild extends Project {
     public void jacoco() throws IOException {
         new JacocoReportOperation()
                 .fromProject(this)
+                .sourceFiles(srcMainKotlin)
                 .execute();
     }