diff --git a/build.gradle b/build.gradle
index 407c14ea8e..e8eda37641 100644
--- a/build.gradle
+++ b/build.gradle
@@ -26,7 +26,6 @@ configure(subprojects) {
     apply plugin: 'com.google.osdetector'
 
     ext { // in alphabetical order
-        grpcVersion = '1.42.1'
         javafxVersion = '16'
         protocVersion = '3.19.1'
 
diff --git a/proto/build.gradle b/proto/build.gradle
index a52ad806fa..383c69736d 100644
--- a/proto/build.gradle
+++ b/proto/build.gradle
@@ -34,7 +34,7 @@ protobuf {
     }
     plugins {
         grpc {
-            artifact = "io.grpc:protoc-gen-grpc-java:${grpcVersion}"
+            artifact = "io.grpc:protoc-gen-grpc-java:1.42.1"
         }
     }
     generateProtoTasks {