diff --git a/commons/active/questionnaire/questionnaire.avsc b/commons/active/questionnaire/questionnaire.avsc
index f4d47f2d..bf426ec4 100644
--- a/commons/active/questionnaire/questionnaire.avsc
+++ b/commons/active/questionnaire/questionnaire.avsc
@@ -15,6 +15,7 @@
         "type": "record",
         "doc": "Questionnaire answer.",
          "fields": [
+           { "name": "questionId", "type": ["null", "string"], "doc": "Unique identifier for the specific question.", "default": null }, 
            { "name": "value", "type": ["int", "string", "double"], "doc": "Subject answer." },
            { "name": "startTime", "type": "double", "doc": "Timestamp in UTC (s) when the question is shown." },
            { "name": "endTime", "type": "double", "doc": "Timestamp in UTC (s)  when the question is answered." }
diff --git a/java-sdk/README.md b/java-sdk/README.md
index e451063a..63e76b01 100644
--- a/java-sdk/README.md
+++ b/java-sdk/README.md
@@ -9,13 +9,13 @@ repositories {
 
 dependencies {
     // Commons schemas (backend, passive remote monitoring app)
-    compile 'org.radarcns:radar-schemas-commons:0.3.2'
+    compile 'org.radarcns:radar-schemas-commons:0.3.4'
 
     // REST API schemas (REST API, testing)
-    compile 'org.radarcns:radar-schemas-restapi:0.3.2'
+    compile 'org.radarcns:radar-schemas-restapi:0.3.4'
 
     // Questionnaire schemas (active remote monitoring app)
-    compile 'org.radarcns:radar-schemas-tools:0.3.2'
+    compile 'org.radarcns:radar-schemas-tools:0.3.4'
 }
 ```
 Usually, you only need to include the schemas you actually need in your dependencies.
diff --git a/java-sdk/build.gradle b/java-sdk/build.gradle
index 81cdc3c7..a032431d 100644
--- a/java-sdk/build.gradle
+++ b/java-sdk/build.gradle
@@ -17,7 +17,7 @@ subprojects {
     apply plugin: 'idea'
 
     // Configuration
-    version = '0.3.3'
+    version = '0.3.4'
     group = 'org.radarcns'
     ext.githubRepoName = 'RADAR-CNS/RADAR-Schemas'
 
diff --git a/java-sdk/radar-schemas-tools/build.gradle b/java-sdk/radar-schemas-tools/build.gradle
index 625b482e..65def6ec 100644
--- a/java-sdk/radar-schemas-tools/build.gradle
+++ b/java-sdk/radar-schemas-tools/build.gradle
@@ -44,6 +44,7 @@ dependencies {
 
     runtimeOnly group: 'org.glassfish.jersey.media', name: 'jersey-media-json-jackson', version: jerseyVersion
     runtimeOnly group: 'org.slf4j', name: 'slf4j-simple', version: '1.7.25'
+    runtimeOnly group: 'org.glassfish.jersey.inject', name: 'jersey-hk2', version: jerseyVersion 
 
     testCompile group: 'junit', name: 'junit', version: junitVersion
 }