diff --git a/client-samples/java/websockets/build.gradle.kts b/client-samples/java/websockets/build.gradle.kts
index 2e2fd3a..a0ac345 100644
--- a/client-samples/java/websockets/build.gradle.kts
+++ b/client-samples/java/websockets/build.gradle.kts
@@ -15,8 +15,8 @@ dependencies {
     implementation(group="com.squareup.okhttp3", name="okhttp", version="5.5.0")
 
     // slf4j
-    implementation(group="org.slf4j", name="slf4j-api", version="2.0.18")
-    implementation(group="org.slf4j", name="slf4j-simple", version="2.0.18")
+    implementation(group="org.slf4j", name="slf4j-api", version="2.0.20")
+    implementation(group="org.slf4j", name="slf4j-simple", version="2.0.20")
 
     // microprofile
     implementation(group="org.eclipse.microprofile", name="microprofile", version="7.1")