diff --git a/src/annotations/build-description-annotation.ts b/src/annotations/build-description-annotation.ts
index e7b93a0..de2aee3 100644
--- a/src/annotations/build-description-annotation.ts
+++ b/src/annotations/build-description-annotation.ts
@@ -27,7 +27,13 @@ export function buildDescriptionAnnotation(
   const isDeprecatedDescription = trimmedDescription.startsWith(
     deprecatedDescriptionPrefix,
   );
-  if (isDeprecatedDescription && typeMetadata?.unionAnnotation) {
+  const isRequiredInputField =
+    definitionNode.kind === Kind.INPUT_VALUE_DEFINITION &&
+    definitionNode.type.kind === Kind.NON_NULL_TYPE;
+  if (
+    isDeprecatedDescription &&
+    (typeMetadata?.unionAnnotation || isRequiredInputField)
+  ) {
     return `@GraphQLDescription("${trimmedDescription}")\n`;
   } else if (isDeprecatedDescription) {
     const descriptionValue = description.replace(
diff --git a/test/unit/should_annotate_types_properly/expected.kt b/test/unit/should_annotate_types_properly/expected.kt
index 2f578ac..410fa38 100644
--- a/test/unit/should_annotate_types_properly/expected.kt
+++ b/test/unit/should_annotate_types_properly/expected.kt
@@ -30,3 +30,11 @@ data class TypeThatShouldBeProperlyAnnotated(
 ) : UnionThatShouldBeProperlyAnnotated
 
 interface UnionThatShouldBeProperlyAnnotated
+
+@GraphQLValidObjectLocations(locations = [GraphQLValidObjectLocations.Locations.INPUT_OBJECT])
+data class InputTypeThatShouldBeProperlyAnnotated(
+    @Deprecated("this field is deprecated")
+    val optionalField: String? = null,
+    @GraphQLDescription("DEPRECATED: this field is deprecated")
+    val requiredField: String
+)
diff --git a/test/unit/should_annotate_types_properly/schema.graphql b/test/unit/should_annotate_types_properly/schema.graphql
index ffdde85..31eaf7c 100644
--- a/test/unit/should_annotate_types_properly/schema.graphql
+++ b/test/unit/should_annotate_types_properly/schema.graphql
@@ -34,3 +34,10 @@ type TypeThatShouldBeProperlyAnnotated {
 }
 
 union UnionThatShouldBeProperlyAnnotated = TypeThatShouldBeProperlyAnnotated
+
+input InputTypeThatShouldBeProperlyAnnotated {
+  "DEPRECATED: this field is deprecated"
+  optionalField: String
+  "DEPRECATED: this field is deprecated"
+  requiredField: String!
+}