diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8d3df9478..22b2f8c91 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,7 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 - #1099, Add support for getting json/jsonb by array index - @steve-chavez
 - #1145, Add materialized view columns to OpenAPI output - @steve-chavez
 - #709, Allow embedding on views with subselects/CTE - @steve-chavez
+- #1148, OpenAPI: add `required` section for the non-nullable columns - @laughedelic
 
 ### Fixed
 
diff --git a/src/PostgREST/OpenAPI.hs b/src/PostgREST/OpenAPI.hs
index 865b7da3a..99b76ae8a 100644
--- a/src/PostgREST/OpenAPI.hs
+++ b/src/PostgREST/OpenAPI.hs
@@ -42,7 +42,8 @@ makeTableDef pks (t, cs, _) =
       (tn, (mempty :: Schema)
         & description .~ tableDescription t
         & type_ .~ SwaggerObject
-        & properties .~ fromList (map (makeProperty pks) cs))
+        & properties .~ fromList (map (makeProperty pks) cs)
+        & required .~ map colName (filter (not . colNullable) cs))
 
 makeProperty :: [PrimaryKey] -> Column -> (Text, Referenced Schema)
 makeProperty pks c = (colName c, Inline s)
diff --git a/test/Feature/StructureSpec.hs b/test/Feature/StructureSpec.hs
index 435e0686f..8089086b5 100644
--- a/test/Feature/StructureSpec.hs
+++ b/test/Feature/StructureSpec.hs
@@ -113,7 +113,10 @@ spec = do
                     "format": "integer",
                     "type": "integer"
                   }
-                }
+                },
+                "required": [
+                  "id"
+                ]
               }
             |]