diff --git a/fireflyframework-webhooks-core/pom.xml b/fireflyframework-webhooks-core/pom.xml
index 8b31a59..570a2a0 100644
--- a/fireflyframework-webhooks-core/pom.xml
+++ b/fireflyframework-webhooks-core/pom.xml
@@ -6,7 +6,7 @@
     <parent>
         <groupId>org.fireflyframework</groupId>
         <artifactId>fireflyframework-webhooks</artifactId>
-        <version>26.04.01</version>
+        <version>26.05.06</version>
     </parent>
 
     <artifactId>fireflyframework-webhooks-core</artifactId>
diff --git a/fireflyframework-webhooks-interfaces/pom.xml b/fireflyframework-webhooks-interfaces/pom.xml
index 2746913..71dfbdf 100644
--- a/fireflyframework-webhooks-interfaces/pom.xml
+++ b/fireflyframework-webhooks-interfaces/pom.xml
@@ -6,7 +6,7 @@
     <parent>
         <groupId>org.fireflyframework</groupId>
         <artifactId>fireflyframework-webhooks</artifactId>
-        <version>26.04.01</version>
+        <version>26.05.06</version>
     </parent>
 
     <artifactId>fireflyframework-webhooks-interfaces</artifactId>
diff --git a/fireflyframework-webhooks-processor/pom.xml b/fireflyframework-webhooks-processor/pom.xml
index ca32808..d31f77e 100644
--- a/fireflyframework-webhooks-processor/pom.xml
+++ b/fireflyframework-webhooks-processor/pom.xml
@@ -6,7 +6,7 @@
     <parent>
         <groupId>org.fireflyframework</groupId>
         <artifactId>fireflyframework-webhooks</artifactId>
-        <version>26.04.01</version>
+        <version>26.05.06</version>
     </parent>
 
     <artifactId>fireflyframework-webhooks-processor</artifactId>
diff --git a/fireflyframework-webhooks-sdk/pom.xml b/fireflyframework-webhooks-sdk/pom.xml
index 7e3ddad..1f2349a 100644
--- a/fireflyframework-webhooks-sdk/pom.xml
+++ b/fireflyframework-webhooks-sdk/pom.xml
@@ -6,7 +6,7 @@
     <parent>
         <groupId>org.fireflyframework</groupId>
         <artifactId>fireflyframework-webhooks</artifactId>
-        <version>26.04.01</version>
+        <version>26.05.06</version>
     </parent>
 
     <artifactId>fireflyframework-webhooks-sdk</artifactId>
diff --git a/fireflyframework-webhooks-web/pom.xml b/fireflyframework-webhooks-web/pom.xml
index 83f5d1d..2e37294 100644
--- a/fireflyframework-webhooks-web/pom.xml
+++ b/fireflyframework-webhooks-web/pom.xml
@@ -6,7 +6,7 @@
     <parent>
         <groupId>org.fireflyframework</groupId>
         <artifactId>fireflyframework-webhooks</artifactId>
-        <version>26.04.01</version>
+        <version>26.05.06</version>
     </parent>
 
     <artifactId>fireflyframework-webhooks-web</artifactId>
diff --git a/fireflyframework-webhooks-web/src/test/resources/application-test.yml b/fireflyframework-webhooks-web/src/test/resources/application-test.yml
index 5bdf7c8..a640044 100644
--- a/fireflyframework-webhooks-web/src/test/resources/application-test.yml
+++ b/fireflyframework-webhooks-web/src/test/resources/application-test.yml
@@ -33,6 +33,9 @@ server:
 
 # Firefly Webhook Configuration
 firefly:
+  observability:
+    health:
+      enabled: false
   webhooks:
     destination:
       prefix: ""
@@ -153,3 +156,11 @@ logging:
     reactor.netty: ERROR
   pattern:
     console: "%clr(%d{HH:mm:ss.SSS}){faint} %clr(%-5level) %clr([%15.15t]){faint} %clr(%-40.40logger{39}){cyan} : %msg%n"
+
+# Disable strict health-group validation in tests + observability health probes
+# (avoids multi-CacheAdapter ambiguity in cache 26.05.06 and missing db contributor
+# in observability 26.05.06 readiness default; both fixed in 26.05.07).
+management:
+  endpoint:
+    health:
+      validate-group-membership: false
diff --git a/pom.xml b/pom.xml
index af5cfb4..18cb7eb 100644
--- a/pom.xml
+++ b/pom.xml
@@ -7,13 +7,13 @@
     <parent>
         <groupId>org.fireflyframework</groupId>
         <artifactId>fireflyframework-parent</artifactId>
-        <version>26.04.01</version>
+        <version>26.05.06</version>
         <relativePath/>
     </parent>
 
     <groupId>org.fireflyframework</groupId>
     <artifactId>fireflyframework-webhooks</artifactId>
-    <version>26.04.01</version>
+    <version>26.05.06</version>
     <packaging>pom</packaging>
 
     <name>Firefly Framework - Webhooks Library</name>