diff --git a/package.json b/package.json
index 5f6bca4..142462c 100644
--- a/package.json
+++ b/package.json
@@ -97,6 +97,6 @@
     "entryPoint": "src/index.ts",
     "template": "oss-npm-package",
     "type": "package",
-    "version": "9.0.0-main-20240928013837"
+    "version": "9.1.0"
   }
 }
diff --git a/src/create/schema/index.ts b/src/create/schema/index.ts
index 7fb8b90..5f69f07 100644
--- a/src/create/schema/index.ts
+++ b/src/create/schema/index.ts
@@ -1,5 +1,6 @@
 import type { ZodType, ZodTypeDef } from 'zod';
 
+import { currentSymbol, previousSymbol } from '../../extendZodTypes';
 import type { oas30, oas31 } from '../../openapi3-ts/dist';
 import {
   type ComponentsObject,
@@ -13,7 +14,6 @@ import { enhanceWithMetadata } from './metadata';
 import { createSchemaSwitch } from './parsers';
 import { verifyEffects } from './parsers/transform';
 import type { CreateSchemaOptions } from './single';
-import { currentSymbol, previousSymbol } from '../../extendZodTypes';
 
 export type LazyMap = Map<ZodType, true>;
 
@@ -222,17 +222,21 @@ export const createSchemaOrRef = <
   }
 
   const previous = zodSchema._def.zodOpenApi?.[previousSymbol]
-    ? (createSchemaOrRef(zodSchema._def.zodOpenApi[previousSymbol], state, true) as
-        | RefObject
-        | undefined)
+    ? (createSchemaOrRef(
+        zodSchema._def.zodOpenApi[previousSymbol],
+        state,
+        true,
+      ) as RefObject | undefined)
     : undefined;
 
   const current =
     zodSchema._def.zodOpenApi?.[currentSymbol] &&
     zodSchema._def.zodOpenApi[currentSymbol] !== zodSchema
-      ? (createSchemaOrRef(zodSchema._def.zodOpenApi[currentSymbol], state, true) as
-          | RefObject
-          | undefined)
+      ? (createSchemaOrRef(
+          zodSchema._def.zodOpenApi[currentSymbol],
+          state,
+          true,
+        ) as RefObject | undefined)
       : undefined;
 
   const ref = zodSchema._def.zodOpenApi?.openapi?.ref ?? component?.ref;
diff --git a/src/create/schema/metadata.test.ts b/src/create/schema/metadata.test.ts
index b83bacb..c61860c 100644
--- a/src/create/schema/metadata.test.ts
+++ b/src/create/schema/metadata.test.ts
@@ -937,6 +937,8 @@ describe('enhanceWithMetadata', () => {
 
   it('does not fail JSON serialization', () => {
     const FooSchema = z.string().openapi({ ref: 'foo' });
-    expect(()=>{JSON.stringify(FooSchema)}).not.toThrow();
+    expect(() => {
+      JSON.stringify(FooSchema);
+    }).not.toThrow();
   });
 });
diff --git a/src/entries/extend.ts b/src/entries/extend.ts
index fea7d7e..ad509e9 100644
--- a/src/entries/extend.ts
+++ b/src/entries/extend.ts
@@ -4,5 +4,4 @@ import { extendZodWithOpenApi } from '../extendZod';
 
 extendZodWithOpenApi(z);
 
-// eslint-disable-next-line @typescript-eslint/consistent-type-exports
 export * from '../extendZodTypes'; // compatibility with < TS 5.0 as the export type * syntax is not supported
diff --git a/src/extendZod.test.ts b/src/extendZod.test.ts
index b9d8492..831ee36 100644
--- a/src/extendZod.test.ts
+++ b/src/extendZod.test.ts
@@ -23,7 +23,8 @@ describe('extendZodWithOpenApi', () => {
     expect(a._def.zodOpenApi?.openapi?.description).toBe('test');
     expect(b._def.zodOpenApi?.openapi?.description).toBe('test2');
     expect(
-      b._def.zodOpenApi?.[previousSymbol]?._def.zodOpenApi?.openapi?.description,
+      b._def.zodOpenApi?.[previousSymbol]?._def.zodOpenApi?.openapi
+        ?.description,
     ).toBe('test');
   });
 
diff --git a/src/extendZod.ts b/src/extendZod.ts
index 3cca5ec..149daee 100644
--- a/src/extendZod.ts
+++ b/src/extendZod.ts
@@ -1,6 +1,5 @@
 import type { ZodRawShape, ZodTypeDef, z } from 'zod';
 
-import './extendZodTypes';
 import { currentSymbol, previousSymbol } from './extendZodTypes';
 
 type ZodOpenApiMetadataDef = NonNullable<ZodTypeDef['zodOpenApi']>;
diff --git a/src/extendZodTypes.ts b/src/extendZodTypes.ts
index e50e23c..c4ff49d 100644
--- a/src/extendZodTypes.ts
+++ b/src/extendZodTypes.ts
@@ -7,8 +7,8 @@ type SchemaObject = oas30.SchemaObject & oas31.SchemaObject;
 
 type ReplaceDate<T> = T extends Date ? Date | string : T;
 
-export const currentSymbol = Symbol("current");
-export const previousSymbol = Symbol("previous");
+export const currentSymbol = Symbol('current');
+export const previousSymbol = Symbol('previous');
 
 /**
  * zod-openapi metadata
diff --git a/tsconfig.json b/tsconfig.json
index ff183e6..59cef52 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -5,6 +5,6 @@
     "removeComments": false,
     "target": "ES2022"
   },
-  "exclude": ["lib*/**/*", "crackle.config.ts"],
+  "exclude": ["lib*/**/*", "crackle.config.ts", "dist", "api", "extend"],
   "extends": "skuba/config/tsconfig.json"
 }