diff --git a/gui/build.gradle b/gui/build.gradle
index e21faab2..55ddccc8 100644
--- a/gui/build.gradle
+++ b/gui/build.gradle
@@ -58,6 +58,7 @@ dependencies {
     compile "org.codehaus.griffon:griffon-guice:${griffon.version}"
 
     runtime "org.slf4j:slf4j-simple:${slf4jVersion}"
+    runtime "javax.annotation:javax.annotation-api:1.3.2"
 
     testCompile "org.codehaus.griffon:griffon-fest-test:${griffon.version}"
     testCompile "org.spockframework:spock-core:${spockVersion}"