diff --git a/parser.y b/parser.y
index bc59a8a6..898e42d5 100644
--- a/parser.y
+++ b/parser.y
@@ -104,6 +104,7 @@ expr: ID { $$ = std::make_unique<IdExprNode>($1); }
   | expr '-' expr { $$ = std::make_unique<SubExprNode>($1, $3); }
   | expr '*' expr { $$ = std::make_unique<MulExprNode>($1, $3); }
   | expr '/' expr { $$ = std::make_unique<DivExprNode>($1, $3); }
+  | '(' expr ')' { $$ = $2; }
   ;
 
 epsilon: /* empty */ ;
diff --git a/test/paren_expr.c b/test/paren_expr.c
new file mode 100644
index 00000000..ae4866e0
--- /dev/null
+++ b/test/paren_expr.c
@@ -0,0 +1,6 @@
+int main() {
+  4 * (5 - 2);
+  10 / ((5 + 1) * 3);
+
+  return 0;
+}
diff --git a/test/paren_expr.exp b/test/paren_expr.exp
new file mode 100644
index 00000000..8d398c5a
--- /dev/null
+++ b/test/paren_expr.exp
@@ -0,0 +1,20 @@
+(*
+  4: int
+  (-
+    5: int
+    2: int
+  ): int
+): int
+(/
+  10: int
+  (*
+    (+
+      5: int
+      1: int
+    ): int
+    3: int
+  ): int
+): int
+(ret
+  0: int
+)