diff --git a/build.gradle b/build.gradle
index 97505e8a..6414fa34 100644
--- a/build.gradle
+++ b/build.gradle
@@ -7,7 +7,7 @@
 
 buildscript {
     ext {
-        kotlin_version = '2.1.20'
+        kotlin_version = '2.1.21'
     }
     repositories {
         google()
diff --git a/gradle/verification-metadata.xml b/gradle/verification-metadata.xml
index 6cf0e2c1..dbd31ce8 100644
--- a/gradle/verification-metadata.xml
+++ b/gradle/verification-metadata.xml
@@ -62,6 +62,7 @@
             <trusting group="org.bitbucket.b_c" name="jose4j" version="0.9.5"/>
          </trusted-key>
          <trusted-key id="31BAE2E51D95E0F8AD9B7BCC40A3C4432BD7308C" group="com.googlecode.juniversalchardet" name="juniversalchardet" version="1.0.3"/>
+         <trusted-key id="32118CF76C9EC5D918E54967CA80D1F0EB6CA4BA" group="org.codehaus.mojo"/>
          <trusted-key id="33FD4BFD33554634053D73C0C2148900BCD3C2AF" group="org.jetbrains" name="annotations" version="23.0.0"/>
          <trusted-key id="34441E504A937F43EB0DAEF96A65176A0FB1CD0B">
             <trusting group="org.apache.groovy" name="groovy-bom" version="4.0.22"/>
diff --git a/sample/build.gradle b/sample/build.gradle
index ea43c808..37ce0b03 100644
--- a/sample/build.gradle
+++ b/sample/build.gradle
@@ -37,7 +37,7 @@ android {
 
 dependencies {
     coreLibraryDesugaring 'com.android.tools:desugar_jdk_libs:2.1.5'
-    implementation(platform("org.jetbrains.kotlin:kotlin-bom:2.1.20"))
+    implementation(platform("org.jetbrains.kotlin:kotlin-bom:2.1.21"))
 
     implementation project(path: ':lib')
     implementation 'androidx.appcompat:appcompat:1.7.0'