diff --git a/version.gradle b/version.gradle
index 519bf0f..3349490 100644
--- a/version.gradle
+++ b/version.gradle
@@ -9,6 +9,7 @@ allprojects {
         minAndroidSdk = 10
         javaSourceCompatibility = 1.8
         junitVersion = '5.8.2'
+        jsrVersion = '3.0.2'
         slf4jVersion = '1.7.32'
         logbackVersion = '1.2.10'
         pgpainlessVersion = '1.2.0'
diff --git a/wkd-java/build.gradle b/wkd-java/build.gradle
index 3c68826..fed9d11 100644
--- a/wkd-java/build.gradle
+++ b/wkd-java/build.gradle
@@ -25,7 +25,7 @@ dependencies {
     implementation "com.sandinh:zbase32-commons-codec:$zbase32Version"
 
     // @Nullable etc.
-    implementation "com.google.code.findbugs:jsr305:3.0.2"
+    implementation "com.google.code.findbugs:jsr305:$jsrVersion"
 }
 
 test {