diff --git a/go.mod b/go.mod
index ce83619e9..b88b8dc4c 100644
--- a/go.mod
+++ b/go.mod
@@ -48,7 +48,7 @@ require (
 	github.com/smartystreets/gunit v1.4.5
 	github.com/stretchr/testify v1.9.0
 	github.com/swaggest/jsonschema-go v0.3.70
-	github.com/swaggest/openapi-go v0.2.50
+	github.com/swaggest/openapi-go v0.2.51
 	github.com/zitadel/oidc/v2 v2.12.0
 	go.opentelemetry.io/contrib/instrumentation/github.com/gin-gonic/gin/otelgin v0.49.0
 	go.opentelemetry.io/contrib/propagators/jaeger v1.27.0
diff --git a/go.sum b/go.sum
index ccd7b67e9..d62c0b6ca 100644
--- a/go.sum
+++ b/go.sum
@@ -379,8 +379,8 @@ github.com/swaggest/assertjson v1.9.0 h1:dKu0BfJkIxv/xe//mkCrK5yZbs79jL7OVf9Ija7
 github.com/swaggest/assertjson v1.9.0/go.mod h1:b+ZKX2VRiUjxfUIal0HDN85W0nHPAYUbYH5WkkSsFsU=
 github.com/swaggest/jsonschema-go v0.3.70 h1:8Vx5nm5t/6DBFw2+WC0/Vp1ZVe9/4mpuA0tuAe0wwCI=
 github.com/swaggest/jsonschema-go v0.3.70/go.mod h1:7N43/CwdaWgPUDfYV70K7Qm79tRqe/al7gLSt9YeGIE=
-github.com/swaggest/openapi-go v0.2.50 h1:5yQ7N/IhMK9bQSk2yFAEbB75DvoXzyEmji3Q2iS++is=
-github.com/swaggest/openapi-go v0.2.50/go.mod h1:5R2TWYBz0U7P3vwIwN0ytwSxqONXZnbiAaa+DQ3Sq1k=
+github.com/swaggest/openapi-go v0.2.51 h1:G8MGdLS4dLz9EZMQtp1aEX57FeiTGcn2utNyaSnwk8Y=
+github.com/swaggest/openapi-go v0.2.51/go.mod h1:5R2TWYBz0U7P3vwIwN0ytwSxqONXZnbiAaa+DQ3Sq1k=
 github.com/swaggest/refl v1.3.0 h1:PEUWIku+ZznYfsoyheF97ypSduvMApYyGkYF3nabS0I=
 github.com/swaggest/refl v1.3.0/go.mod h1:3Ujvbmh1pfSbDYjC6JGG7nMgPvpG0ehQL4iNonnLNbg=
 github.com/twitchyliquid64/golang-asm v0.15.1 h1:SU5vSMR7hnwNxj24w34ZyCi/FmDZTkS4MhqMhdFk5YI=
diff --git a/vendor/github.com/swaggest/openapi-go/internal/json_schema.go b/vendor/github.com/swaggest/openapi-go/internal/json_schema.go
index a7166c99b..f19d55f02 100644
--- a/vendor/github.com/swaggest/openapi-go/internal/json_schema.go
+++ b/vendor/github.com/swaggest/openapi-go/internal/json_schema.go
@@ -66,6 +66,14 @@ func ReflectRequestBody(
 		hasTaggedFields = refl.HasTaggedFields(input, t)
 	}
 
+	hasJSONSchemaStruct := false
+
+	refl.WalkFieldsRecursively(reflect.ValueOf(input), func(v reflect.Value, _ reflect.StructField, _ []reflect.StructField) {
+		if v.Type() == reflect.TypeOf(jsonschema.Struct{}) {
+			hasJSONSchemaStruct = true
+		}
+	})
+
 	// Form data can not have map or array as body.
 	if !hasTaggedFields && len(mapping) == 0 && tag != tagJSON {
 		return nil, false, nil
@@ -74,7 +82,7 @@ func ReflectRequestBody(
 	// If `formData` is defined on a request body `json` is ignored.
 	if tag == tagJSON &&
 		(refl.HasTaggedFields(input, tagFormData) || refl.HasTaggedFields(input, tagForm)) &&
-		!forceJSONRequestBody {
+		!forceJSONRequestBody && !hasJSONSchemaStruct {
 		return nil, false, nil
 	}
 
@@ -89,7 +97,7 @@ func ReflectRequestBody(
 	}
 
 	// JSON can be a map or array without field tags.
-	if !hasTaggedFields && len(mapping) == 0 && !refl.IsSliceOrMap(input) &&
+	if !hasTaggedFields && !hasJSONSchemaStruct && len(mapping) == 0 && !refl.IsSliceOrMap(input) &&
 		refl.FindEmbeddedSliceOrMap(input) == nil && !isProcessWithoutTags {
 		return nil, false, nil
 	}
diff --git a/vendor/modules.txt b/vendor/modules.txt
index db5b96beb..d72329025 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -422,7 +422,7 @@ github.com/stretchr/testify/require
 # github.com/swaggest/jsonschema-go v0.3.70
 ## explicit; go 1.18
 github.com/swaggest/jsonschema-go
-# github.com/swaggest/openapi-go v0.2.50
+# github.com/swaggest/openapi-go v0.2.51
 ## explicit; go 1.18
 github.com/swaggest/openapi-go
 github.com/swaggest/openapi-go/internal