diff --git a/client-impl/build.gradle b/client-impl/build.gradle
index e853e65..921ceb4 100644
--- a/client-impl/build.gradle
+++ b/client-impl/build.gradle
@@ -11,6 +11,7 @@ repositories {
 
 dependencies {
     implementation project(':client-api')
+    implementation 'org.jetbrains:annotations:24.1.0'
     implementation 'com.squareup.okhttp:okhttp:2.7.5'
 
     testImplementation platform('org.junit:junit-bom:5.9.1')