diff --git a/documentation/rules/2001.md b/documentation/rules/2001.md
new file mode 100644
index 0000000..1f7dfbe
--- /dev/null
+++ b/documentation/rules/2001.md
@@ -0,0 +1,64 @@
+### 2001 - RemovedRequiredProperty
+
+**Description**: Checks whether an existing required property is removed from the previous specification.
+
+**Cause**: This is considered a breaking change when the property is used in responses.
+
+**Example**: Property `name` of schema `Person` is removed in the new version.
+
+Old specification
+```json5
+{
+  "Person": {
+    "type": "object",
+    "properties": {
+      "id": {
+        "type": "integer",
+        "format": "int32",
+        "xml": {
+          "attribute": true
+        }
+      },
+      "name": {
+        "type": "string",
+        "xml": {
+          "namespace": "http://example.com/schema/sample",
+          "prefix": "sample"
+        }
+      }
+    },
+    "required": [
+      "id",
+      "name"
+    ]
+  }
+}
+```
+
+New specification
+```json5
+{
+  "Person": {
+    "type": "object",
+    "properties": {
+      "id": {
+        "type": "integer",
+        "format": "int32",
+        "xml": {
+          "attribute": true
+        }
+      },
+      "name": {
+        "type": "string",
+        "xml": {
+          "namespace": "http://example.com/schema/sample",
+          "prefix": "sample"
+        }
+      }
+    },
+    "required": [
+      "id"
+    ]
+  }
+}
+```
diff --git a/src/Criteo.OpenApi.Comparator.UTest/OpenApiSpecificationsCompareTests.cs b/src/Criteo.OpenApi.Comparator.UTest/OpenApiSpecificationsCompareTests.cs
index 307d81f..bda882d 100644
--- a/src/Criteo.OpenApi.Comparator.UTest/OpenApiSpecificationsCompareTests.cs
+++ b/src/Criteo.OpenApi.Comparator.UTest/OpenApiSpecificationsCompareTests.cs
@@ -810,6 +810,21 @@ public void Compare_OAS_Should_Return_Nullable_Property_Changed_When_Nullable_Pr
             });
         }
 
+        [Test]
+        public void CompareOAS_ShouldReturn_RemovedRequiredPropertyDifferences()
+        {
+            var differences = CompareSpecifications("removed_required_property.json");
+
+            var expectedDifference = new ExpectedDifference
+            {
+                Rule = ComparisonRules.RemovedRequiredProperty,
+                Severity = Severity.Warning,
+                NewJsonRef = "#/paths/~1pets/put/responses/200/content/text~1plain/schema"
+            };
+            differences.AssertContains(expectedDifference, 1);
+            differences.AssertContainsOnly(expectedDifference);
+        }
+
         /// <summary>
         /// Helper method -- load two Open Api Specification documents and invoke the comparison logic.
         /// </summary>
diff --git a/src/Criteo.OpenApi.Comparator.UTest/Resource/new/removed_required_property.json b/src/Criteo.OpenApi.Comparator.UTest/Resource/new/removed_required_property.json
new file mode 100644
index 0000000..28164bb
--- /dev/null
+++ b/src/Criteo.OpenApi.Comparator.UTest/Resource/new/removed_required_property.json
@@ -0,0 +1,75 @@
+{
+    "openapi": "3.0.0",
+    "info": {
+        "title": "Removed_required_property",
+        "version": "2.0"
+    },
+    "paths": {
+        "/pets": {
+            "put": {
+                "description": "Update a pet",
+                "requestBody": {
+                    "content": {
+                        "application/json": {
+                            "schema": {
+                                "$ref": "#/components/schemas/PetWrite"
+                            }
+                        }
+                    }
+                },
+                "responses": {
+                    "200": {
+                        "description": "Request successful",
+                        "content": {
+                            "text/plain": {
+                                "schema": {
+                                    "$ref": "#/components/schemas/PetRead"
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    },
+    "components": {
+        "schemas": {
+            "PetRead": {
+                "type": "object",
+                "properties": {
+                    "name": {
+                        "type": "string"
+                    },
+                    "petType": {
+                        "type": "string",
+                        "enum": [
+                            "cat",
+                            "dog"
+                        ]
+                    }
+                },
+                "required": [
+                    "petType"
+                ]
+            },
+            "PetWrite": {
+                "type": "object",
+                "properties": {
+                    "name": {
+                        "type": "string"
+                    },
+                    "petType": {
+                        "type": "string",
+                        "enum": [
+                            "cat",
+                            "dog"
+                        ]
+                    }
+                },
+                "required": [
+                    "petType"
+                ]
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/Criteo.OpenApi.Comparator.UTest/Resource/old/different_discriminator.json b/src/Criteo.OpenApi.Comparator.UTest/Resource/old/different_discriminator.json
index 943a522..3f1d717 100644
--- a/src/Criteo.OpenApi.Comparator.UTest/Resource/old/different_discriminator.json
+++ b/src/Criteo.OpenApi.Comparator.UTest/Resource/old/different_discriminator.json
@@ -70,9 +70,6 @@
         "schemas": {
             "Pet": {
                 "type": "object",
-                "required": [
-                    "name"
-                ],
                 "discriminator": {
                     "propertyName": "petType"
                 },
diff --git a/src/Criteo.OpenApi.Comparator.UTest/Resource/old/removed_required_property.json b/src/Criteo.OpenApi.Comparator.UTest/Resource/old/removed_required_property.json
new file mode 100644
index 0000000..2e80fb3
--- /dev/null
+++ b/src/Criteo.OpenApi.Comparator.UTest/Resource/old/removed_required_property.json
@@ -0,0 +1,77 @@
+{
+    "openapi": "3.0.0",
+    "info": {
+        "title": "Removed_required_property",
+        "version": "1.0"
+    },
+    "paths": {
+        "/pets": {
+            "put": {
+                "description": "Update a pet",
+                "requestBody": {
+                    "content": {
+                        "application/json": {
+                            "schema": {
+                                "$ref": "#/components/schemas/PetWrite"
+                            }
+                        }
+                    }
+                },
+                "responses": {
+                    "200": {
+                        "description": "Request successful",
+                        "content": {
+                            "text/plain": {
+                                "schema": {
+                                    "$ref": "#/components/schemas/PetRead"
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    },
+    "components": {
+        "schemas": {
+            "PetRead": {
+                "type": "object",
+                "properties": {
+                    "name": {
+                        "type": "string"
+                    },
+                    "petType": {
+                        "type": "string",
+                        "enum": [
+                            "cat",
+                            "dog"
+                        ]
+                    }
+                },
+                "required": [
+                    "name",
+                    "petType"
+                ]
+            },
+            "PetWrite": {
+                "type": "object",
+                "properties": {
+                    "name": {
+                        "type": "string"
+                    },
+                    "petType": {
+                        "type": "string",
+                        "enum": [
+                            "cat",
+                            "dog"
+                        ]
+                    }
+                },
+                "required": [
+                    "name",
+                    "petType"
+                ]
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/Criteo.OpenApi.Comparator/Comparators/SchemaComparator.cs b/src/Criteo.OpenApi.Comparator/Comparators/SchemaComparator.cs
index 0442ebb..51ab4a0 100644
--- a/src/Criteo.OpenApi.Comparator/Comparators/SchemaComparator.cs
+++ b/src/Criteo.OpenApi.Comparator/Comparators/SchemaComparator.cs
@@ -547,7 +547,7 @@ private static void CompareRequired(ComparisonContext context,
             ISet<string> oldRequired,
             ISet<string> newRequired)
         {
-            if (newRequired == null)
+            if (newRequired == null && (oldRequired == null || context.Direction == DataDirection.Request))
                 return;
 
             if (oldRequired == null)
@@ -556,12 +556,29 @@ private static void CompareRequired(ComparisonContext context,
                 return;
             }
 
+            if (newRequired == null)
+            {
+                context.LogBreakingChange(ComparisonRules.RemovedRequiredProperty, string.Join(", ", oldRequired));
+                return;
+            }
+
             List<string> addedRequiredProperties = newRequired.Except(oldRequired).ToList();
             if (addedRequiredProperties.Any())
             {
                 context.LogBreakingChange(ComparisonRules.AddedRequiredProperty,
                     string.Join(", ", addedRequiredProperties));
             }
+
+            if (context.Direction == DataDirection.Request)
+            {
+                return;
+            }
+            List<string> removedRequiredProperties = oldRequired.Except(newRequired).ToList();
+            if (removedRequiredProperties.Any())
+            {
+                context.LogBreakingChange(ComparisonRules.RemovedRequiredProperty,
+                    string.Join(", ", addedRequiredProperties));
+            }
         }
     }
 }
diff --git a/src/Criteo.OpenApi.Comparator/ComparisonRules.cs b/src/Criteo.OpenApi.Comparator/ComparisonRules.cs
index 4d4c4cb..398378c 100644
--- a/src/Criteo.OpenApi.Comparator/ComparisonRules.cs
+++ b/src/Criteo.OpenApi.Comparator/ComparisonRules.cs
@@ -609,5 +609,16 @@ public static class ComparisonRules
             Message = "The nullable property has changed from '{0}' to '{1}'.",
             Type = MessageType.Update
         };
+
+        /// <summary>
+        /// OpenApi Specification version 3 specific
+        /// </summary>
+        public static ComparisonRule RemovedRequiredProperty = new ComparisonRule()
+        {
+            Id = 2001,
+            Code = nameof(RemovedRequiredProperty),
+            Message = "The required property '{0}' was removed in the new version.",
+            Type = MessageType.Removal
+        };
     }
 }