diff --git a/client-samples/java/rest/build.gradle.kts b/client-samples/java/rest/build.gradle.kts
index 0eb74818..012a1176 100644
--- a/client-samples/java/rest/build.gradle.kts
+++ b/client-samples/java/rest/build.gradle.kts
@@ -23,7 +23,7 @@ dependencies {
 
     // microprofile
     implementation(group="org.eclipse.microprofile", name="microprofile", version="7.1")
-    implementation(group="io.smallrye.config", name="smallrye-config", version="3.10.2")
+    implementation(group="io.smallrye.config", name="smallrye-config", version="4.0.0")
 
     // testing
     testImplementation(group="com.squareup.okhttp3", name="mockwebserver", version="5.5.0")