diff --git a/plugin-api/pom.xml b/plugin-api/pom.xml
index cd2ea72..cfb4f3c 100644
--- a/plugin-api/pom.xml
+++ b/plugin-api/pom.xml
@@ -7,7 +7,7 @@
     <parent>
         <groupId>org.fireflyframework</groupId>
         <artifactId>fireflyframework-plugins</artifactId>
-        <version>26.04.01</version>
+        <version>26.05.01</version>
     </parent>
 
     <artifactId>plugin-api</artifactId>
diff --git a/plugin-api/target/maven-archiver/pom.properties b/plugin-api/target/maven-archiver/pom.properties
index f64941b..72c17ed 100644
--- a/plugin-api/target/maven-archiver/pom.properties
+++ b/plugin-api/target/maven-archiver/pom.properties
@@ -1,3 +1,3 @@
 artifactId=plugin-api
 groupId=org.fireflyframework
-version=26.02.06
+version=26.04.01
diff --git a/plugin-core/pom.xml b/plugin-core/pom.xml
index 8205822..035d41a 100644
--- a/plugin-core/pom.xml
+++ b/plugin-core/pom.xml
@@ -7,7 +7,7 @@
     <parent>
         <groupId>org.fireflyframework</groupId>
         <artifactId>fireflyframework-plugins</artifactId>
-        <version>26.04.01</version>
+        <version>26.05.01</version>
     </parent>
 
     <artifactId>plugin-core</artifactId>
@@ -22,5 +22,13 @@
             <artifactId>plugin-api</artifactId>
             <version>${project.version}</version>
         </dependency>
+
+        <!-- Observability: unified metrics, tracing, health, structured logging (OTel-backed) -->
+        <dependency>
+            <groupId>org.fireflyframework</groupId>
+            <artifactId>fireflyframework-observability</artifactId>
+            <version>${project.version}</version>
+            <optional>true</optional>
+        </dependency>
     </dependencies>
 </project>
diff --git a/plugin-core/target/maven-archiver/pom.properties b/plugin-core/target/maven-archiver/pom.properties
index 878bc75..bb051ca 100644
--- a/plugin-core/target/maven-archiver/pom.properties
+++ b/plugin-core/target/maven-archiver/pom.properties
@@ -1,3 +1,3 @@
 artifactId=plugin-core
 groupId=org.fireflyframework
-version=26.02.06
+version=26.04.01
diff --git a/pom.xml b/pom.xml
index 40362c7..6d09db2 100644
--- a/pom.xml
+++ b/pom.xml
@@ -7,12 +7,12 @@
     <parent>
         <groupId>org.fireflyframework</groupId>
         <artifactId>fireflyframework-parent</artifactId>
-        <version>26.04.01</version>
+        <version>26.05.01</version>
     </parent>
 
     <groupId>org.fireflyframework</groupId>
     <artifactId>fireflyframework-plugins</artifactId>
-    <version>26.04.01</version>
+    <version>26.05.01</version>
     <packaging>pom</packaging>
 
     <name>Firefly Framework - Common Plugins</name>