diff --git a/ast/ast_test.go b/ast/ast_test.go
index e2b249d..53a0379 100644
--- a/ast/ast_test.go
+++ b/ast/ast_test.go
@@ -12,6 +12,10 @@ import (
 )
 
 func TestASTByTable(t *testing.T) {
+	type CustomString string
+	type CustomBool bool
+	type CustomInt int
+	type CustomInt64 int64
 	t.Parallel()
 	tests := []struct {
 		name string
@@ -143,6 +147,16 @@ func TestASTByTable(t *testing.T) {
 			ast.Permit().When(ast.Boolean(true)),
 			internalast.Permit().When(internalast.Boolean(true)),
 		},
+		{
+			"customValueBoolFalse",
+			ast.Permit().When(ast.Boolean(CustomBool(false))),
+			internalast.Permit().When(internalast.Boolean(false)),
+		},
+		{
+			"customValueBoolTrue",
+			ast.Permit().When(ast.Boolean(CustomBool(true))),
+			internalast.Permit().When(internalast.Boolean(true)),
+		},
 		{
 			"valueTrue",
 			ast.Permit().When(ast.True()),
@@ -158,6 +172,21 @@ func TestASTByTable(t *testing.T) {
 			ast.Permit().When(ast.String("cedar")),
 			internalast.Permit().When(internalast.String("cedar")),
 		},
+		{
+			"customValueString",
+			ast.Permit().When(ast.String(CustomString("cedar"))),
+			internalast.Permit().When(internalast.String("cedar")),
+		},
+		{
+			"customValueInt",
+			ast.Permit().When(ast.Long(CustomInt(42))),
+			internalast.Permit().When(internalast.Long(42)),
+		},
+		{
+			"customValueInt64",
+			ast.Permit().When(ast.Long(CustomInt64(42))),
+			internalast.Permit().When(internalast.Long(42)),
+		},
 		{
 			"valueLong",
 			ast.Permit().When(ast.Long(42)),
diff --git a/ast/value.go b/ast/value.go
index 258683d..3be1731 100644
--- a/ast/value.go
+++ b/ast/value.go
@@ -9,7 +9,7 @@ import (
 )
 
 // Boolean creates a value node containing a Boolean.
-func Boolean[T bool | types.Boolean](b T) Node {
+func Boolean[T ~bool](b T) Node {
 	return wrapNode(ast.Boolean(types.Boolean(b)))
 }
 
@@ -24,12 +24,12 @@ func False() Node {
 }
 
 // String creates a value node containing a String.
-func String[T string | types.String](s T) Node {
+func String[T ~string](s T) Node {
 	return wrapNode(ast.String(types.String(s)))
 }
 
 // Long creates a value node containing a Long.
-func Long[T int | int64 | types.Long](l T) Node {
+func Long[T ~int | ~int64](l T) Node {
 	return wrapNode(ast.Long(types.Long(l)))
 }