diff --git a/parser/unparser.go b/parser/unparser.go
index 5ff979aa..c3c40a0d 100644
--- a/parser/unparser.go
+++ b/parser/unparser.go
@@ -276,6 +276,9 @@ func (un *unparser) visitConst(expr *exprpb.Expr) error {
 		// represent the float using the minimum required digits
 		d := strconv.FormatFloat(c.GetDoubleValue(), 'g', -1, 64)
 		un.str.WriteString(d)
+		if !strings.Contains(d, ".") {
+			un.str.WriteString(".0")
+		}
 	case *exprpb.Constant_Int64Value:
 		i := strconv.FormatInt(c.GetInt64Value(), 10)
 		un.str.WriteString(i)
diff --git a/parser/unparser_test.go b/parser/unparser_test.go
index 7696d724..aea5bdec 100644
--- a/parser/unparser_test.go
+++ b/parser/unparser_test.go
@@ -68,6 +68,11 @@ func TestUnparse(t *testing.T) {
 		{name: "func_in", in: `a in b`},
 		{name: "list_empty", in: `[]`},
 		{name: "list_one", in: `[1]`},
+		{name: "list_ints", in: `[1, 2, 3]`},
+		{name: "list_doubles", in: `[1.0, 2.0, 3.0]`},
+		{name: "list_doubles", in: `[1.1, 2.1, 3.1]`},
+		{name: "list_uints", in: `[1u, 2u, 3u]`},
+		{name: "list_numeric", in: `[1, 2.0, 3u]`},
 		{name: "list_many", in: `["hello, world", "goodbye, world", "sure, why not?"]`},
 		{name: "lit_bytes", in: `b"\303\203\302\277"`},
 		{name: "lit_double", in: `-42.101`},