diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0e59b9c8..0ba1fdf0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Fixed
+- Fix formatting of index containing brackets string in parentheses ([#992](https://github.com/JohnnyMorganz/StyLua/pull/992))
+
 ## [2.1.0] - 2025-04-21
 
 ### Added
diff --git a/src/formatters/expression.rs b/src/formatters/expression.rs
index 112df107..cc69ddb8 100644
--- a/src/formatters/expression.rs
+++ b/src/formatters/expression.rs
@@ -369,6 +369,7 @@ pub fn is_brackets_string(expression: &Expression) -> bool {
                 ..
             }
         ),
+        Expression::Parentheses { expression, .. } => is_brackets_string(expression),
         #[cfg(feature = "luau")]
         Expression::TypeAssertion { expression, .. } => is_brackets_string(expression),
         _ => false,
diff --git a/tests/inputs-luau/string-brackets-index.lua b/tests/inputs-luau/string-brackets-index.lua
index 3a8343db..a6c7d420 100644
--- a/tests/inputs-luau/string-brackets-index.lua
+++ b/tests/inputs-luau/string-brackets-index.lua
@@ -1,5 +1,9 @@
 local foo = {
 	[ [[test]] :: test ] = true,
+	[ ([[foo]]) :: test ] = true,
+	[ ( [[bar]] ) :: test ] = true,
 }
 
 foo[ [[test]] :: test ] = false
+foo[ ([[foo]]) :: test ] = false
+foo[ ( [[bar]] ) :: test ] = false
diff --git a/tests/inputs/string-brackets-index.lua b/tests/inputs/string-brackets-index.lua
index 628f759c..cd6f85d3 100644
--- a/tests/inputs/string-brackets-index.lua
+++ b/tests/inputs/string-brackets-index.lua
@@ -1,5 +1,11 @@
 local foo = {
 	[ [[test]] ] = true,
+	[([[foo]])] = true,
+	[( [[bar]] )] = true,
+	[ ([[baz]]) ] = true,
 }
 
 foo[ [[test]] ] = false
+foo[([[foo]])] = true
+foo[( [[bar]] )] = true
+foo[ ([[baz]]) ] = true
diff --git a/tests/snapshots/tests__luau@string-brackets-index.lua.snap b/tests/snapshots/tests__luau@string-brackets-index.lua.snap
index 45612df3..378091c3 100644
--- a/tests/snapshots/tests__luau@string-brackets-index.lua.snap
+++ b/tests/snapshots/tests__luau@string-brackets-index.lua.snap
@@ -5,7 +5,11 @@ input_file: tests/inputs-luau/string-brackets-index.lua
 ---
 local foo = {
 	[ [[test]] :: test ] = true,
+	[ ([[foo]]) :: test ] = true,
+	[ ([[bar]]) :: test ] = true,
 }
 
 foo[ [[test]] :: test ] = false
+foo[ ([[foo]]) :: test ] = false
+foo[ ([[bar]]) :: test ] = false
 
diff --git a/tests/snapshots/tests__standard@string-brackets-index.lua.snap b/tests/snapshots/tests__standard@string-brackets-index.lua.snap
index 495bafa9..ae4ef45b 100644
--- a/tests/snapshots/tests__standard@string-brackets-index.lua.snap
+++ b/tests/snapshots/tests__standard@string-brackets-index.lua.snap
@@ -4,7 +4,13 @@ expression: format(&contents)
 ---
 local foo = {
 	[ [[test]] ] = true,
+	[ [[foo]] ] = true,
+	[ [[bar]] ] = true,
+	[ [[baz]] ] = true,
 }
 
 foo[ [[test]] ] = false
+foo[ [[foo]] ] = true
+foo[ [[bar]] ] = true
+foo[ [[baz]] ] = true