diff --git a/internal/events/package.json b/internal/events/package.json
index d8b6626c9..cf2e4f0e4 100644
--- a/internal/events/package.json
+++ b/internal/events/package.json
@@ -37,5 +37,5 @@
     "typecheck": "tsc --noEmit"
   },
   "types": "dist/index.d.ts",
-  "version": "1.0.13"
+  "version": "1.0.14"
 }
diff --git a/internal/events/src/events/__tests__/event-envelope.test.ts b/internal/events/src/events/__tests__/event-envelope.test.ts
index 4842ef4fb..cad95ea10 100644
--- a/internal/events/src/events/__tests__/event-envelope.test.ts
+++ b/internal/events/src/events/__tests__/event-envelope.test.ts
@@ -364,5 +364,27 @@ describe("EventEnvelope schema validation", () => {
       const result = $EnvelopeNoPrefix.safeParse(envelope);
       expect(result.success).toBe(false);
     });
+
+    it("should accept subject with non uuid resource id", () => {
+      const envelope = {
+        ...baseLetterEnvelope,
+        subject: "letter-origin/letter-rendering/letter/Some_Letter_12345",
+      };
+
+      const result = $EnvelopeWithPrefix.safeParse(envelope);
+      expect(result.error).toBeUndefined();
+      expect(result.success).toBe(true);
+    });
+
+    it("should accept subject with multi sub path resource id", () => {
+      const envelope = {
+        ...baseLetterEnvelope,
+        subject: "letter-origin/letter-rendering/letter/a/B/c/123",
+      };
+
+      const result = $EnvelopeWithPrefix.safeParse(envelope);
+      expect(result.error).toBeUndefined();
+      expect(result.success).toBe(true);
+    });
   });
 });
diff --git a/internal/events/src/events/event-envelope.ts b/internal/events/src/events/event-envelope.ts
index ba9d41449..9541d6dab 100644
--- a/internal/events/src/events/event-envelope.ts
+++ b/internal/events/src/events/event-envelope.ts
@@ -81,6 +81,7 @@ export function EventEnvelope<TData extends z.ZodTypeAny>(
 
       source: z
         .string()
+        // eslint-disable-next-line security/detect-unsafe-regex
         .regex(/^\/data-plane\/supplier-api(?:\/.*)?$/)
         .meta({
           title: "Event Source",
@@ -90,8 +91,10 @@ export function EventEnvelope<TData extends z.ZodTypeAny>(
 
       subject: z
         .string()
-
-        .regex(new RegExp(`^${subjectPrefixRegex}${resourceName}/[a-z0-9-]+$`))
+        .regex(
+          // eslint-disable-next-line security/detect-non-literal-regexp
+          new RegExp(`^${subjectPrefixRegex}${resourceName}/[^/]+(?:/.*)?$`),
+        )
         .meta({
           title: "Event Subject",
           description: