diff --git a/coap-mbedtls/build.gradle.kts b/coap-mbedtls/build.gradle.kts
index f19f1e98..571262ff 100644
--- a/coap-mbedtls/build.gradle.kts
+++ b/coap-mbedtls/build.gradle.kts
@@ -6,10 +6,10 @@ description = "coap-mbedtls"
 
 dependencies {
     api(project(":coap-core"))
-    api("io.github.open-coap:kotlin-mbedtls:1.21.0")
+    api("io.github.open-coap:kotlin-mbedtls:1.23.0")
 
     testImplementation(project(":coap-netty"))
-    testImplementation("io.github.open-coap:kotlin-mbedtls-netty:1.21.0")
+    testImplementation("io.github.open-coap:kotlin-mbedtls-netty:1.23.0")
 
     testImplementation(testFixtures(project(":coap-core")))
     testImplementation("org.junit.jupiter:junit-jupiter-api:5.10.1")