diff --git a/act/jobparser/model.go b/act/jobparser/model.go
index f63a0455..476853fd 100644
--- a/act/jobparser/model.go
+++ b/act/jobparser/model.go
@@ -260,7 +260,7 @@ func ParseRawOn(rawOn *yaml.Node) ([]*Event, error) {
 							}
 						}
 					case map[string]interface{}:
-						if k != "workflow_dispatch" || act != "inputs" {
+						if isInvalidOnType(k, act) {
 							return nil, fmt.Errorf("unknown on type: %#v", v)
 						}
 						acts = nil
@@ -304,6 +304,16 @@ func ParseRawOn(rawOn *yaml.Node) ([]*Event, error) {
 	}
 }
 
+func isInvalidOnType(onType, subKey string) bool {
+	if onType == "workflow_dispatch" && subKey == "inputs" {
+		return false
+	}
+	if onType == "workflow_call" && (subKey == "inputs" || subKey == "outputs") {
+		return false
+	}
+	return true
+}
+
 // parseMappingNode parse a mapping node and preserve order.
 func parseMappingNode[T any](node *yaml.Node) ([]string, []T, error) {
 	if node.Kind != yaml.MappingNode {
diff --git a/act/jobparser/model_test.go b/act/jobparser/model_test.go
index a034306f..45f8e9b2 100644
--- a/act/jobparser/model_test.go
+++ b/act/jobparser/model_test.go
@@ -163,7 +163,7 @@ func TestParseRawOn(t *testing.T) {
 			},
 		},
 		{
-			input: "on: [pull_request, workflow_dispatch]",
+			input: "on: [pull_request, workflow_dispatch, workflow_call]",
 			result: []*Event{
 				{
 					Name: "pull_request",
@@ -171,6 +171,9 @@ func TestParseRawOn(t *testing.T) {
 				{
 					Name: "workflow_dispatch",
 				},
+				{
+					Name: "workflow_call",
+				},
 			},
 		},
 		{
@@ -194,6 +197,14 @@ func TestParseRawOn(t *testing.T) {
 				},
 			},
 		},
+		{
+			input: "on:\n  workflow_call:\n    inputs:\n      test:\n        type: string\n    outputs:\n      output:\n        value: something",
+			result: []*Event{
+				{
+					Name: "workflow_call",
+				},
+			},
+		},
 	}
 	for _, kase := range kases {
 		t.Run(kase.input, func(t *testing.T) {