diff --git a/coap-mbedtls/build.gradle.kts b/coap-mbedtls/build.gradle.kts
index 4b5bf55e..4f99a03b 100644
--- a/coap-mbedtls/build.gradle.kts
+++ b/coap-mbedtls/build.gradle.kts
@@ -6,8 +6,8 @@ description = "coap-mbedtls"
 
 dependencies {
     api(project(":coap-core"))
-    api("io.github.open-coap:kotlin-mbedtls:1.32.2")
-    api("io.github.open-coap:kotlin-mbedtls-netty:1.32.2")
+    api("io.github.open-coap:kotlin-mbedtls:1.33.1")
+    api("io.github.open-coap:kotlin-mbedtls-netty:1.33.1")
 
     testImplementation(project(":coap-netty"))