diff --git a/README.md b/README.md
index d612797..1773e0f 100644
--- a/README.md
+++ b/README.md
@@ -43,8 +43,7 @@ fn main() {
   "type": "object",
   "required": [
     "my_bool",
-    "my_int",
-    "my_nullable_enum"
+    "my_int"
   ],
   "properties": {
     "my_bool": {
diff --git a/docs/_includes/examples/custom_settings.schema.json b/docs/_includes/examples/custom_settings.schema.json
index 0bc689c..36d9f17 100644
--- a/docs/_includes/examples/custom_settings.schema.json
+++ b/docs/_includes/examples/custom_settings.schema.json
@@ -4,8 +4,7 @@
   "type": "object",
   "required": [
     "my_bool",
-    "my_int",
-    "my_nullable_enum"
+    "my_int"
   ],
   "properties": {
     "my_bool": {
diff --git a/docs/_includes/examples/doc_comments.schema.json b/docs/_includes/examples/doc_comments.schema.json
index dfaec3c..7cc468f 100644
--- a/docs/_includes/examples/doc_comments.schema.json
+++ b/docs/_includes/examples/doc_comments.schema.json
@@ -5,8 +5,7 @@
   "type": "object",
   "required": [
     "my_bool",
-    "my_int",
-    "my_nullable_enum"
+    "my_int"
   ],
   "properties": {
     "my_bool": {
diff --git a/docs/_includes/examples/main.schema.json b/docs/_includes/examples/main.schema.json
index ec883fd..a658248 100644
--- a/docs/_includes/examples/main.schema.json
+++ b/docs/_includes/examples/main.schema.json
@@ -4,8 +4,7 @@
   "type": "object",
   "required": [
     "my_bool",
-    "my_int",
-    "my_nullable_enum"
+    "my_int"
   ],
   "properties": {
     "my_bool": {
diff --git a/schemars/examples/custom_settings.schema.json b/schemars/examples/custom_settings.schema.json
index 0bc689c..36d9f17 100644
--- a/schemars/examples/custom_settings.schema.json
+++ b/schemars/examples/custom_settings.schema.json
@@ -4,8 +4,7 @@
   "type": "object",
   "required": [
     "my_bool",
-    "my_int",
-    "my_nullable_enum"
+    "my_int"
   ],
   "properties": {
     "my_bool": {
diff --git a/schemars/examples/doc_comments.schema.json b/schemars/examples/doc_comments.schema.json
index dfaec3c..7cc468f 100644
--- a/schemars/examples/doc_comments.schema.json
+++ b/schemars/examples/doc_comments.schema.json
@@ -5,8 +5,7 @@
   "type": "object",
   "required": [
     "my_bool",
-    "my_int",
-    "my_nullable_enum"
+    "my_int"
   ],
   "properties": {
     "my_bool": {
diff --git a/schemars/examples/main.schema.json b/schemars/examples/main.schema.json
index ec883fd..a658248 100644
--- a/schemars/examples/main.schema.json
+++ b/schemars/examples/main.schema.json
@@ -4,8 +4,7 @@
   "type": "object",
   "required": [
     "my_bool",
-    "my_int",
-    "my_nullable_enum"
+    "my_int"
   ],
   "properties": {
     "my_bool": {