diff --git a/ucl/builtins.go b/ucl/builtins.go
index 59faca9..88a796d 100644
--- a/ucl/builtins.go
+++ b/ucl/builtins.go
@@ -246,7 +246,7 @@ func eqBuiltin(ctx context.Context, args invocationArgs) (Object, error) {
 	l := args.args[0]
 	r := args.args[1]
 
-	return boolObject(objectsEqual(l, r)), nil
+	return BoolObject(objectsEqual(l, r)), nil
 }
 
 func neBuiltin(ctx context.Context, args invocationArgs) (Object, error) {
@@ -257,7 +257,7 @@ func neBuiltin(ctx context.Context, args invocationArgs) (Object, error) {
 	l := args.args[0]
 	r := args.args[1]
 
-	return boolObject(!objectsEqual(l, r)), nil
+	return BoolObject(!objectsEqual(l, r)), nil
 }
 
 func ltBuiltin(ctx context.Context, args invocationArgs) (Object, error) {
@@ -269,7 +269,7 @@ func ltBuiltin(ctx context.Context, args invocationArgs) (Object, error) {
 	if err != nil {
 		return nil, err
 	}
-	return boolObject(isLess), nil
+	return BoolObject(isLess), nil
 }
 
 func leBuiltin(ctx context.Context, args invocationArgs) (Object, error) {
@@ -281,7 +281,7 @@ func leBuiltin(ctx context.Context, args invocationArgs) (Object, error) {
 	if err != nil {
 		return nil, err
 	}
-	return boolObject(isLess || objectsEqual(args.args[0], args.args[1])), nil
+	return BoolObject(isLess || objectsEqual(args.args[0], args.args[1])), nil
 }
 
 func gtBuiltin(ctx context.Context, args invocationArgs) (Object, error) {
@@ -293,7 +293,7 @@ func gtBuiltin(ctx context.Context, args invocationArgs) (Object, error) {
 	if err != nil {
 		return nil, err
 	}
-	return boolObject(isGreater), nil
+	return BoolObject(isGreater), nil
 }
 
 func geBuiltin(ctx context.Context, args invocationArgs) (Object, error) {
@@ -305,7 +305,7 @@ func geBuiltin(ctx context.Context, args invocationArgs) (Object, error) {
 	if err != nil {
 		return nil, err
 	}
-	return boolObject(isGreater || objectsEqual(args.args[0], args.args[1])), nil
+	return BoolObject(isGreater || objectsEqual(args.args[0], args.args[1])), nil
 }
 
 func andBuiltin(ctx context.Context, args invocationArgs) (Object, error) {
@@ -339,7 +339,7 @@ func notBuiltin(ctx context.Context, args invocationArgs) (Object, error) {
 		return nil, err
 	}
 
-	return boolObject(!args.args[0].Truthy()), nil
+	return BoolObject(!args.args[0].Truthy()), nil
 }
 
 var errObjectsNotEqual = errors.New("objects not equal")
@@ -358,8 +358,8 @@ func objectsEqual(l, r Object) bool {
 		if rv, ok := r.(IntObject); ok {
 			return lv == rv
 		}
-	case boolObject:
-		if rv, ok := r.(boolObject); ok {
+	case BoolObject:
+		if rv, ok := r.(BoolObject); ok {
 			return lv == rv
 		}
 	case Listable:
@@ -446,7 +446,7 @@ func intBuiltin(ctx context.Context, args invocationArgs) (Object, error) {
 			return nil, errors.New("cannot convert to int")
 		}
 		return IntObject(i), nil
-	case boolObject:
+	case BoolObject:
 		if v {
 			return IntObject(1), nil
 		}
diff --git a/ucl/objs.go b/ucl/objs.go
index 2ea3cac..827260e 100644
--- a/ucl/objs.go
+++ b/ucl/objs.go
@@ -172,26 +172,26 @@ func (i IntObject) Truthy() bool {
 	return i != 0
 }
 
-type boolObject bool
+type BoolObject bool
 
-func (b boolObject) String() string {
+func (b BoolObject) String() string {
 	if b {
 		return "true"
 	}
 	return "false"
 }
 
-func (b boolObject) Truthy() bool {
+func (b BoolObject) Truthy() bool {
 	return bool(b)
 }
 
-type timeObject time.Time
+type TimeObject time.Time
 
-func (t timeObject) String() string {
+func (t TimeObject) String() string {
 	return time.Time(t).Format(time.RFC3339)
 }
 
-func (t timeObject) Truthy() bool {
+func (t TimeObject) Truthy() bool {
 	return !time.Time(t).IsZero()
 }
 
@@ -205,9 +205,9 @@ func toGoValue(obj Object) (interface{}, bool) {
 		return int(v), true
 	case StringListObject:
 		return []string(v), true
-	case boolObject:
+	case BoolObject:
 		return bool(v), true
-	case timeObject:
+	case TimeObject:
 		return time.Time(v), true
 	case *ListObject:
 		xs := make([]interface{}, 0, len(*v))
@@ -257,9 +257,9 @@ func fromGoValue(v any) (Object, error) {
 	case int:
 		return IntObject(t), nil
 	case bool:
-		return boolObject(t), nil
+		return BoolObject(t), nil
 	case time.Time:
-		return timeObject(t), nil
+		return TimeObject(t), nil
 	}
 
 	return fromGoReflectValue(reflect.ValueOf(v))