diff --git a/flexentry.go b/flexentry.go
index 1aa9b1e..8365109 100644
--- a/flexentry.go
+++ b/flexentry.go
@@ -174,10 +174,30 @@ func (e *Entrypoint) DetectEnviron(ctx context.Context, event Event) ([]string,
 				environ = MergeEnv(environ, es)
 				continue
 			}
+			if is, ok := v.([]interface{}); ok {
+				es := make([]string, 0, len(is))
+				for _, i := range is {
+					if s, ok := i.(string); ok {
+						es = append(es, s)
+					}
+				}
+				environ = MergeEnv(environ, es)
+				continue
+			}
 			if es, ok := v.(map[string]string); ok {
 				environ = MergeEnvWithMap(environ, es)
 				continue
 			}
+			if is, ok := v.(map[string]interface{}); ok {
+				es := make(map[string]string, len(is))
+				for key, value := range is {
+					if s, ok := value.(string); ok {
+						es[key] = s
+					}
+				}
+				environ = MergeEnvWithMap(environ, es)
+				continue
+			}
 		}
 		return environ, nil
 	}
diff --git a/flexentry_test.go b/flexentry_test.go
index 8e0e7f8..a241a04 100644
--- a/flexentry_test.go
+++ b/flexentry_test.go
@@ -147,6 +147,28 @@ func TestEntrypointDetectEnviron(t *testing.T) {
 				"FUGA=hoge",
 			},
 		},
+		{
+			event: map[string]interface{}{
+				"cmd": "echo hoge",
+				"env": []interface{}{
+					"HOGE=fuga",
+					"FUGA=hoge",
+				},
+			},
+			expected: []string{
+				"HOGE=fuga",
+				"FUGA=hoge",
+			},
+		},
+		{
+			event: map[string]interface{}{
+				"cmd": "echo hoge",
+				"env": map[string]interface{}{
+					"HOGE": "fuga",
+				},
+			},
+			expected: []string{"HOGE=fuga"},
+		},
 	}
 
 	for i, c := range cases {