diff --git a/pom.xml b/pom.xml
index f5be7ab..a40fd3c 100644
--- a/pom.xml
+++ b/pom.xml
@@ -91,7 +91,7 @@
                 <version>1.2.0</version>
                 <executions>
                     <execution>
-                        <phase>package</phase>
+                        <phase>initialize</phase>
                         <goals>
                             <goal>write-project-properties</goal>
                         </goals>
diff --git a/src/main/java/tutorial/buildon/aws/o11y/HelloAppController.java b/src/main/java/tutorial/buildon/aws/o11y/HelloAppController.java
index 3f931e4..5db9db5 100644
--- a/src/main/java/tutorial/buildon/aws/o11y/HelloAppController.java
+++ b/src/main/java/tutorial/buildon/aws/o11y/HelloAppController.java
@@ -26,10 +26,10 @@ public class HelloAppController {
     private static final Logger log =
         LoggerFactory.getLogger(HelloAppController.class);
 
-    @Value("otel.traces.api.version")
+    @Value("${otel.traces.api.version}")
     private String tracesApiVersion;
 
-    @Value("otel.metrics.api.version")
+    @Value("${otel.metrics.api.version}")
     private String metricsApiVersion;
 
     private final Tracer tracer =