diff --git a/src/extendSchemableClass.ts b/src/extendSchemableClass.ts
index 9074869..4c92aac 100644
--- a/src/extendSchemableClass.ts
+++ b/src/extendSchemableClass.ts
@@ -35,7 +35,7 @@ export function extendSchemableClass<
     >,
 
     props: {
-        schema: (
+        schema: (props: {
             schema: z.ZodObject<
                 ExtendSchemaT,
                 ExtendSchemaUnknownKeys,
@@ -43,7 +43,9 @@ export function extendSchemableClass<
                 ExtendSchemaValues,
                 ExtendSchemaValues
             >
-        ) => z.ZodObject<
+
+            shape: ExtendSchemaT
+        }) => z.ZodObject<
             SchemaT,
             SchemaUnknownKeys,
             SchemaCatchall,
@@ -60,7 +62,10 @@ export function extendSchemableClass<
             : AbstractClass<T, Arguments>
     )
 
-    const schema        = props.schema(extend.schema)
+    const schema = props.schema({
+        schema:  extend.schema,
+        shape:   extend.schema.shape,
+    })
     const defaultValues = props.defaultValues(extend.defaultValues)
 
     return class extends extend {
diff --git a/src/jsonifiable/dejsonifySchemable.ts b/src/jsonifiable/dejsonifySchemable.ts
new file mode 100644
index 0000000..b8e7f80
--- /dev/null
+++ b/src/jsonifiable/dejsonifySchemable.ts
@@ -0,0 +1,213 @@
+import { Effect, pipe } from "effect"
+import { JsonifiableObject } from "type-fest/source/jsonifiable"
+import { z } from "zod"
+import { JsonifiableSchemableClass } from "."
+import { parseZodTypeEffect } from "../util"
+
+
+export function dejsonifySchemable<
+    C extends JsonifiableSchemableClass<
+        SchemaT,
+        SchemaUnknownKeys,
+        SchemaCatchall,
+
+        Values,
+        DefaultValues,
+
+        JsonifySchemaT,
+        JsonifySchemaUnknownKeys,
+        JsonifySchemaCatchall,
+
+        DejsonifySchemaT,
+        DejsonifySchemaUnknownKeys,
+        DejsonifySchemaCatchall,
+
+        JsonifiedValues,
+
+        "Class"
+    >,
+
+    SchemaT                    extends z.ZodRawShape,
+    SchemaUnknownKeys          extends z.UnknownKeysParam,
+    SchemaCatchall             extends z.ZodTypeAny,
+
+    Values                     extends {},
+    DefaultValues              extends Partial<Values>,
+
+    JsonifySchemaT             extends z.ZodRawShape,
+    JsonifySchemaUnknownKeys   extends z.UnknownKeysParam,
+    JsonifySchemaCatchall      extends z.ZodTypeAny,
+
+    DejsonifySchemaT           extends z.ZodRawShape,
+    DejsonifySchemaUnknownKeys extends z.UnknownKeysParam,
+    DejsonifySchemaCatchall    extends z.ZodTypeAny,
+
+    JsonifiedValues            extends JsonifiableObject,
+>(
+    class_: C | JsonifiableSchemableClass<
+        SchemaT,
+        SchemaUnknownKeys,
+        SchemaCatchall,
+
+        Values,
+        DefaultValues,
+
+        JsonifySchemaT,
+        JsonifySchemaUnknownKeys,
+        JsonifySchemaCatchall,
+
+        DejsonifySchemaT,
+        DejsonifySchemaUnknownKeys,
+        DejsonifySchemaCatchall,
+
+        JsonifiedValues,
+
+        "Class"
+    >,
+
+    values:   JsonifiedValues,
+    params?:  Partial<z.ParseParams>,
+) {
+    return new class_(
+        class_.dejsonifySchema.parse(values, params)
+    ) as InstanceType<C>
+}
+
+
+export async function dejsonifySchemablePromise<
+    C extends JsonifiableSchemableClass<
+        SchemaT,
+        SchemaUnknownKeys,
+        SchemaCatchall,
+
+        Values,
+        DefaultValues,
+
+        JsonifySchemaT,
+        JsonifySchemaUnknownKeys,
+        JsonifySchemaCatchall,
+
+        DejsonifySchemaT,
+        DejsonifySchemaUnknownKeys,
+        DejsonifySchemaCatchall,
+
+        JsonifiedValues,
+
+        "Class"
+    >,
+
+    SchemaT                    extends z.ZodRawShape,
+    SchemaUnknownKeys          extends z.UnknownKeysParam,
+    SchemaCatchall             extends z.ZodTypeAny,
+
+    Values                     extends {},
+    DefaultValues              extends Partial<Values>,
+
+    JsonifySchemaT             extends z.ZodRawShape,
+    JsonifySchemaUnknownKeys   extends z.UnknownKeysParam,
+    JsonifySchemaCatchall      extends z.ZodTypeAny,
+
+    DejsonifySchemaT           extends z.ZodRawShape,
+    DejsonifySchemaUnknownKeys extends z.UnknownKeysParam,
+    DejsonifySchemaCatchall    extends z.ZodTypeAny,
+
+    JsonifiedValues            extends JsonifiableObject,
+>(
+    class_: C | JsonifiableSchemableClass<
+        SchemaT,
+        SchemaUnknownKeys,
+        SchemaCatchall,
+
+        Values,
+        DefaultValues,
+
+        JsonifySchemaT,
+        JsonifySchemaUnknownKeys,
+        JsonifySchemaCatchall,
+
+        DejsonifySchemaT,
+        DejsonifySchemaUnknownKeys,
+        DejsonifySchemaCatchall,
+
+        JsonifiedValues,
+
+        "Class"
+    >,
+
+    values:   JsonifiedValues,
+    params?:  Partial<z.ParseParams>,
+) {
+    return new class_(
+        await class_.dejsonifySchema.parseAsync(values, params)
+    ) as InstanceType<C>
+}
+
+
+export function dejsonifySchemableEffect<
+    C extends JsonifiableSchemableClass<
+        SchemaT,
+        SchemaUnknownKeys,
+        SchemaCatchall,
+
+        Values,
+        DefaultValues,
+
+        JsonifySchemaT,
+        JsonifySchemaUnknownKeys,
+        JsonifySchemaCatchall,
+
+        DejsonifySchemaT,
+        DejsonifySchemaUnknownKeys,
+        DejsonifySchemaCatchall,
+
+        JsonifiedValues,
+
+        "Class"
+    >,
+
+    SchemaT                    extends z.ZodRawShape,
+    SchemaUnknownKeys          extends z.UnknownKeysParam,
+    SchemaCatchall             extends z.ZodTypeAny,
+
+    Values                     extends {},
+    DefaultValues              extends Partial<Values>,
+
+    JsonifySchemaT             extends z.ZodRawShape,
+    JsonifySchemaUnknownKeys   extends z.UnknownKeysParam,
+    JsonifySchemaCatchall      extends z.ZodTypeAny,
+
+    DejsonifySchemaT           extends z.ZodRawShape,
+    DejsonifySchemaUnknownKeys extends z.UnknownKeysParam,
+    DejsonifySchemaCatchall    extends z.ZodTypeAny,
+
+    JsonifiedValues            extends JsonifiableObject,
+>(
+    class_: C | JsonifiableSchemableClass<
+        SchemaT,
+        SchemaUnknownKeys,
+        SchemaCatchall,
+
+        Values,
+        DefaultValues,
+
+        JsonifySchemaT,
+        JsonifySchemaUnknownKeys,
+        JsonifySchemaCatchall,
+
+        DejsonifySchemaT,
+        DejsonifySchemaUnknownKeys,
+        DejsonifySchemaCatchall,
+
+        JsonifiedValues,
+
+        "Class"
+    >,
+
+    values:   JsonifiedValues,
+    params?:  Partial<z.ParseParams>,
+) {
+    return pipe(
+        parseZodTypeEffect(class_.dejsonifySchema, values, params),
+        Effect.map(values => new class_(values) as InstanceType<C>),
+    )
+}
diff --git a/src/jsonifiable/index.ts b/src/jsonifiable/index.ts
index 3f08be2..26a26be 100644
--- a/src/jsonifiable/index.ts
+++ b/src/jsonifiable/index.ts
@@ -1,2 +1,3 @@
 export * from "./JsonifiableSchemableClass"
+export * from "./dejsonifySchemable"
 export * from "./makeJsonifiableSchemableClass"
diff --git a/src/tests.ts b/src/tests.ts
index b76de19..00be534 100644
--- a/src/tests.ts
+++ b/src/tests.ts
@@ -1,7 +1,7 @@
 import { pipeInto } from "ts-functional-pipe"
 import { z } from "zod"
 import { extendSchemableClass, makeSchemableClass, newSchemable } from "."
-import { makeJsonifiableSchemableClass } from "./jsonifiable"
+import { dejsonifySchemable, makeJsonifiableSchemableClass } from "./jsonifiable"
 import { dejsonifyBigIntSchema, jsonifyBigIntSchema } from "./legacy/jsonifiable"
 
 
@@ -49,11 +49,13 @@ class User extends pipeInto(
 
 
 const user1 = newSchemable(User, { id: 1n, name: "User" })
-console.log(user1.jsonify())
+const jsonifiedUser1 = user1.jsonify()
+console.log(jsonifiedUser1)
+console.log(dejsonifySchemable(User, jsonifiedUser1))
 
 
 const UserWithPhone = extendSchemableClass(User, {
-    schema: schema => schema.extend({
+    schema: ({ schema }) => schema.extend({
         phone: z.string()
     }),
 
@@ -66,5 +68,5 @@ const UserWithPhone = extendSchemableClass(User, {
 UserWithPhone.schema
 
 
-const user2 = newSchemable(UserWithPhone, { id: 1n, name: "User" })
-console.log(user2.jsonify())
+// const user2 = newSchemable(UserWithPhone, { id: 1n, name: "User" })
+// console.log(user2.jsonify())