diff --git a/src/main/java/io/jenkins/plugins/opentelemetry/init/JenkinsExecutorMonitoringInitializer.java b/src/main/java/io/jenkins/plugins/opentelemetry/init/JenkinsExecutorMonitoringInitializer.java
index da713ba8b..d492b272b 100644
--- a/src/main/java/io/jenkins/plugins/opentelemetry/init/JenkinsExecutorMonitoringInitializer.java
+++ b/src/main/java/io/jenkins/plugins/opentelemetry/init/JenkinsExecutorMonitoringInitializer.java
@@ -48,22 +48,22 @@ public void postConstruct() {
         Meter meter = Objects.requireNonNull(jenkinsControllerOpenTelemetry).getDefaultMeter();
 
         final ObservableLongMeasurement queueLength = meter.gaugeBuilder(JENKINS_EXECUTOR_QUEUE)
-                .setUnit("${items}")
+                .setUnit("{items}")
                 .setDescription("Executors queue items")
                 .ofLongs()
                 .buildObserver();
         final ObservableLongMeasurement totalExecutors = meter.gaugeBuilder(JENKINS_EXECUTOR_TOTAL)
-                .setUnit("${executors}")
+                .setUnit("{executors}")
                 .setDescription("Total executors")
                 .ofLongs()
                 .buildObserver();
         final ObservableLongMeasurement nodes = meter.gaugeBuilder(JENKINS_NODE)
-                .setUnit("${nodes}")
+                .setUnit("{nodes}")
                 .setDescription("Nodes")
                 .ofLongs()
                 .buildObserver();
         final ObservableLongMeasurement executors = meter.gaugeBuilder(JENKINS_EXECUTOR_COUNT)
-                .setUnit("${executors}")
+                .setUnit("{executors}")
                 .setDescription("Count of executors per label")
                 .ofLongs()
                 .buildObserver();
@@ -73,32 +73,32 @@ public void postConstruct() {
         //  * `jenkins.node` metric with the `status` attribute
         //  * `jenkins.executor.total` metric with the `status` attribute
         final ObservableLongMeasurement availableExecutors = meter.gaugeBuilder(JENKINS_EXECUTOR_AVAILABLE)
-                .setUnit("${executors}")
+                .setUnit("{executors}")
                 .setDescription("Available executors")
                 .ofLongs()
                 .buildObserver();
         final ObservableLongMeasurement busyExecutors = meter.gaugeBuilder(JENKINS_EXECUTOR_BUSY)
-                .setUnit("${executors}")
+                .setUnit("{executors}")
                 .setDescription("Busy executors")
                 .ofLongs()
                 .buildObserver();
         final ObservableLongMeasurement idleExecutors = meter.gaugeBuilder(JENKINS_EXECUTOR_IDLE)
-                .setUnit("${executors}")
+                .setUnit("{executors}")
                 .setDescription("Idle executors")
                 .ofLongs()
                 .buildObserver();
         final ObservableLongMeasurement onlineExecutors = meter.gaugeBuilder(JENKINS_EXECUTOR_ONLINE)
-                .setUnit("${executors}")
+                .setUnit("{executors}")
                 .setDescription("Online executors")
                 .ofLongs()
                 .buildObserver();
         final ObservableLongMeasurement connectingExecutors = meter.gaugeBuilder(JENKINS_EXECUTOR_CONNECTING)
-                .setUnit("${executors}")
+                .setUnit("{executors}")
                 .setDescription("Connecting executors")
                 .ofLongs()
                 .buildObserver();
         final ObservableLongMeasurement definedExecutors = meter.gaugeBuilder(JENKINS_EXECUTOR_DEFINED)
-                .setUnit("${executors}")
+                .setUnit("{executors}")
                 .setDescription("Defined executors")
                 .ofLongs()
                 .buildObserver();
diff --git a/src/main/java/io/jenkins/plugins/opentelemetry/init/PluginMonitoringInitializer.java b/src/main/java/io/jenkins/plugins/opentelemetry/init/PluginMonitoringInitializer.java
index 77fad0efc..dddac057b 100644
--- a/src/main/java/io/jenkins/plugins/opentelemetry/init/PluginMonitoringInitializer.java
+++ b/src/main/java/io/jenkins/plugins/opentelemetry/init/PluginMonitoringInitializer.java
@@ -49,12 +49,12 @@ public void postConstruct() {
         Meter meter = Objects.requireNonNull(jenkinsControllerOpenTelemetry).getDefaultMeter();
 
         final ObservableLongMeasurement plugins = meter.gaugeBuilder(JENKINS_PLUGINS_COUNT)
-                .setUnit("${plugins}")
+                .setUnit("{plugins}")
                 .setDescription("Jenkins plugins")
                 .ofLongs()
                 .buildObserver();
         final ObservableLongMeasurement pluginUpdates = meter.gaugeBuilder(JENKINS_PLUGINS_UPDATES)
-                .setUnit("${plugins}")
+                .setUnit("{plugins}")
                 .setDescription("Jenkins plugin updates")
                 .ofLongs()
                 .buildObserver();
diff --git a/src/main/java/io/jenkins/plugins/opentelemetry/queue/MonitoringQueueListener.java b/src/main/java/io/jenkins/plugins/opentelemetry/queue/MonitoringQueueListener.java
index aaf517cd3..7fc389531 100644
--- a/src/main/java/io/jenkins/plugins/opentelemetry/queue/MonitoringQueueListener.java
+++ b/src/main/java/io/jenkins/plugins/opentelemetry/queue/MonitoringQueueListener.java
@@ -65,7 +65,7 @@ public void postConstruct() {
         final ObservableLongMeasurement queueItems = meter.gaugeBuilder(JENKINS_QUEUE_COUNT)
                 .ofLongs()
                 .setDescription("Number of tasks in the queue")
-                .setUnit("${tasks}")
+                .setUnit("{tasks}")
                 .buildObserver();
         // should be deprecated in favor of "jenkins.queue" metric with status attribute
         final ObservableLongMeasurement queueWaitingItems = meter.gaugeBuilder(JENKINS_QUEUE_WAITING)
diff --git a/src/main/java/io/jenkins/plugins/opentelemetry/security/AuditingSecurityListener.java b/src/main/java/io/jenkins/plugins/opentelemetry/security/AuditingSecurityListener.java
index 737abfee2..02f5ea0dd 100644
--- a/src/main/java/io/jenkins/plugins/opentelemetry/security/AuditingSecurityListener.java
+++ b/src/main/java/io/jenkins/plugins/opentelemetry/security/AuditingSecurityListener.java
@@ -63,16 +63,16 @@ public void postConstruct() {
 
         loginSuccessCounter = meter.counterBuilder(JenkinsMetrics.LOGIN_SUCCESS)
                 .setDescription("Successful logins")
-                .setUnit("${logins}")
+                .setUnit("{logins}")
                 .build();
         loginFailureCounter = meter.counterBuilder(JenkinsMetrics.LOGIN_FAILURE)
                 .setDescription("Failing logins")
-                .setUnit("${logins}")
+                .setUnit("{logins}")
                 .build();
 
         loginCounter = meter.counterBuilder(JenkinsMetrics.LOGIN)
                 .setDescription("Logins")
-                .setUnit("${logins}")
+                .setUnit("{logins}")
                 .build();
     }