diff --git a/module/package-lock.json b/module/package-lock.json
index 1495dbf6..fa18b462 100644
--- a/module/package-lock.json
+++ b/module/package-lock.json
@@ -68,13 +68,13 @@
         "vite-plugin-static-copy": "0.16.0",
         "vite-plugin-turbosnap": "1.0.3",
         "wait-on": "7.0.1",
-        "zod": "3.21.4"
+        "zod": "^4.1.5"
       },
       "peerDependencies": {
         "date-fns": "2.x",
         "react": "18.x",
         "react-dom": "18.x",
-        "zod": "3.*"
+        "zod": "^3.21.4 || ^4.0.0"
       }
     },
     "node_modules/@adobe/css-tools": {
@@ -23511,10 +23511,11 @@
       }
     },
     "node_modules/zod": {
-      "version": "3.21.4",
-      "resolved": "https://registry.npmjs.org/zod/-/zod-3.21.4.tgz",
-      "integrity": "sha512-m46AKbrzKVzOzs/DZgVnG5H55N1sv1M8qZU3A8RIKbs3mrACDNeIOeilDymVb2HdmP8uwshOCF4uJ8uM9rCqJw==",
+      "version": "4.1.5",
+      "resolved": "https://registry.npmjs.org/zod/-/zod-4.1.5.tgz",
+      "integrity": "sha512-rcUUZqlLJgBC33IT3PNMgsCq6TzLQEG/Ei/KTCU0PedSWRMAXoOUN+4t/0H+Q8bdnLPdqUYnvboJT0bn/229qg==",
       "dev": true,
+      "license": "MIT",
       "funding": {
         "url": "https://github.com/sponsors/colinhacks"
       }
@@ -39534,9 +39535,9 @@
       }
     },
     "zod": {
-      "version": "3.21.4",
-      "resolved": "https://registry.npmjs.org/zod/-/zod-3.21.4.tgz",
-      "integrity": "sha512-m46AKbrzKVzOzs/DZgVnG5H55N1sv1M8qZU3A8RIKbs3mrACDNeIOeilDymVb2HdmP8uwshOCF4uJ8uM9rCqJw==",
+      "version": "4.1.5",
+      "resolved": "https://registry.npmjs.org/zod/-/zod-4.1.5.tgz",
+      "integrity": "sha512-rcUUZqlLJgBC33IT3PNMgsCq6TzLQEG/Ei/KTCU0PedSWRMAXoOUN+4t/0H+Q8bdnLPdqUYnvboJT0bn/229qg==",
       "dev": true
     }
   }
diff --git a/module/package.json b/module/package.json
index 4cce1c29..cea37a4e 100644
--- a/module/package.json
+++ b/module/package.json
@@ -21,7 +21,7 @@
     "date-fns": "2.x",
     "react": "18.x",
     "react-dom": "18.x",
-    "zod": "3.*"
+    "zod": "^3.21.4 || ^4.0.0"
   },
   "files": [
     "dist"
@@ -100,7 +100,7 @@
     "vite-plugin-static-copy": "0.16.0",
     "vite-plugin-turbosnap": "1.0.3",
     "wait-on": "7.0.1",
-    "zod": "3.21.4"
+    "zod": "^4.1.5"
   },
   "dependencies": {
     "@radix-ui/react-checkbox": "1.0.4",
diff --git a/module/src/form/hooks/useForm.ts b/module/src/form/hooks/useForm.ts
index 067398dd..07346699 100644
--- a/module/src/form/hooks/useForm.ts
+++ b/module/src/form/hooks/useForm.ts
@@ -118,7 +118,7 @@ export function useForm<TData extends object>(
       let errors: IValidationError[] = [];
 
       if (!results.success) {
-        errors = getMyZodErrors(results.error.errors, keyChainString);
+        errors = getMyZodErrors(results.error.issues, keyChainString);
 
         if (errors.length && !silent) {
           clientValidationDispatcher({ type: 'add-validation', errors });
diff --git a/module/src/form/types.ts b/module/src/form/types.ts
index fb87839f..e5fd8f56 100644
--- a/module/src/form/types.ts
+++ b/module/src/form/types.ts
@@ -8,10 +8,9 @@ import {
   type ZodBigInt,
   type ZodBoolean,
   type ZodDate,
-  type ZodEffects,
+  type ZodTransform,
   type ZodEnum,
   type ZodLiteral,
-  type ZodNativeEnum,
   type ZodNullable,
   type ZodNumber,
   type ZodObject,
@@ -498,12 +497,7 @@ export interface IArrayOfZod<TProp> {
   /** A function which defines the validation to apply to the array itself (e.g. `opts: arr => arr.min(1).max(5)`) */
   opts?: (
     arr: ZodArray<TProp & ZodTypeAny>
-  ) =>
-    | ZodArray<TProp & ZodTypeAny>
-    | ZodNullable<ZodTypeAny>
-    | ZodOptional<ZodTypeAny>
-    | ZodOptional<ZodNullable<ZodTypeAny>>
-    | ZodEffects<ZodTypeAny>;
+  ) => ZodTypeAny;
 }
 
 /**
@@ -516,24 +510,27 @@ export interface IObjectOfZod<TProp> {
   /** A function which defines the validation to apply to the object itself (e.g. `opts: ob => ob.required()`) */
   opts?: (
     ob: ZodObject<TProp & ZodRawShape>
-  ) =>
-    | ZodObject<TProp & ZodRawShape>
-    | ZodNullable<ZodTypeAny>
-    | ZodOptional<ZodTypeAny>
-    | ZodOptional<ZodNullable<ZodTypeAny>>
-    | ZodEffects<ZodTypeAny>;
+  ) => ZodTypeAny;
 }
 
-type WithZodAdditions<T extends ZodTypeAny, K> =
+type WithZodAdditions<T extends ZodTypeAny, K extends string | number | boolean> =
   | T
   | ZodLiteral<K>
   | ZodOptional<T>
   | ZodNullable<T>
   | ZodOptional<ZodNullable<T>>
-  | ZodEffects<T, K, K>
-  | ZodUnion<[WithZodAdditions<T, K>, ...ZodTypeAny[]]>
-  // eslint-disable-next-line @typescript-eslint/no-explicit-any -- any required for zod native enum
-  | ZodNativeEnum<any>
+  | ZodTransform<T, K>
+  | ZodUnion<[T, ...ZodTypeAny[]]>
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any -- any required for zod enum
+  | ZodEnum<any>;
+
+type WithZodAdditionsDate<T extends ZodTypeAny> =
+  | T
+  | ZodOptional<T>
+  | ZodNullable<T>
+  | ZodOptional<ZodNullable<T>>
+  | ZodTransform<T, Date>
+  | ZodUnion<[T, ...ZodTypeAny[]]>
   // eslint-disable-next-line @typescript-eslint/no-explicit-any -- any required for zod enum
   | ZodEnum<any>;
 
@@ -548,7 +545,7 @@ export type ToZod<TProp> = {
   bigint: ZodNullOrUndefined<TProp, WithZodAdditions<ZodBigInt, number>>;
   number: ZodNullOrUndefined<TProp, WithZodAdditions<ZodNumber, number>>;
   boolean: ZodNullOrUndefined<TProp, WithZodAdditions<ZodBoolean, boolean>>;
-  date: ZodNullOrUndefined<TProp, WithZodAdditions<ZodDate, Date>>;
+  date: ZodNullOrUndefined<TProp, WithZodAdditionsDate<ZodDate>>;
   object: IObjectOfZod<{ [TKey in keyof TProp]: ToZod<TProp[TKey]> }>;
   rest: never;
 }[StringType<TProp>];
diff --git a/module/src/form/utils/validation.ts b/module/src/form/utils/validation.ts
index 8346be18..4dcefe03 100644
--- a/module/src/form/utils/validation.ts
+++ b/module/src/form/utils/validation.ts
@@ -123,9 +123,9 @@ export function zodFromValidationSchema<TData>(schema: IRootValidationSchema<TDa
  */
 export const getMyZodErrors = (errors: ZodIssue[], keyChainString?: string) => {
   return errors
-    .filter(e => (keyChainString ? isMyKeyChainItem(keyStringFromKeyChain(e.path, 'dots'), keyChainString) : true))
+    .filter(e => (keyChainString ? isMyKeyChainItem(keyStringFromKeyChain(e.path as KeyChain, 'dots'), keyChainString) : true))
     .map(e => ({
-      key: keyStringFromKeyChain(e.path, 'dots'),
+      key: keyStringFromKeyChain(e.path as KeyChain, 'dots'),
       message: e.message,
     }));
 };