diff --git a/package.json b/package.json
index cd1f625..73dd587 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@endeavorance/parsec",
-  "version": "0.4.0",
+  "version": "0.5.0",
   "author": "Endeavorance",
   "type": "module",
   "module": "dist/index.js",
diff --git a/src/index.ts b/src/index.ts
index 6877eea..d087f55 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -203,9 +203,12 @@ export const Parse = {
     };
   },
 
-  optional<T>(parser: (val: unknown) => T): (val: unknown) => T | undefined {
+  optional<T>(
+    parser: (val: unknown) => T,
+    coerceNull = false,
+  ): (val: unknown) => T | undefined {
     return (val: unknown) => {
-      if (val === undefined) {
+      if (val === undefined || (coerceNull && val === null)) {
         return undefined;
       }
 
@@ -213,9 +216,12 @@ export const Parse = {
     };
   },
 
-  nullable<T>(parser: (val: unknown) => T): (val: unknown) => T | null {
+  nullable<T>(
+    parser: (val: unknown) => T,
+    coerceUndefined = false,
+  ): (val: unknown) => T | null {
     return (val: unknown) => {
-      if (val === null) {
+      if (val === null || (coerceUndefined && val === undefined)) {
         return null;
       }