diff --git a/.changeset/four-files-sort.md b/.changeset/four-files-sort.md
new file mode 100644
index 0000000..fc1dc16
--- /dev/null
+++ b/.changeset/four-files-sort.md
@@ -0,0 +1,5 @@
+---
+"@eventcatalog/sdk": patch
+---
+
+fix(sdk): fixed types for specifications on the service type
diff --git a/src/types.d.ts b/src/types.d.ts
index b8f68e8..df4b008 100644
--- a/src/types.d.ts
+++ b/src/types.d.ts
@@ -27,7 +27,8 @@ export interface Event extends BaseSchema {}
 export interface Command extends BaseSchema {}
 
 export interface Specifications {
-  [key: 'asyncapiPath' | 'openapiPath']: string;
+  asyncapiPath?: string;
+  openapiPath?: string;
 }
 
 export interface Service extends BaseSchema {