diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0fbe20f0..09183009 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Fixed
 
 - Luau: Fixed panic when formatting explicit type instantiation (`f<<T>>()`) inside a nested function call argument (e.g. as a callback) ([#1088](https://github.com/JohnnyMorganz/StyLua/issues/1088))
+- Luau: Fixed parentheses being incorrectly removed from single-element type packs in explicit type instantiation, e.g. `f<<(number)>>(10)` becoming `f<<number>>(10)` ([#1089](https://github.com/JohnnyMorganz/StyLua/issues/1089))
 
 ## [2.4.0] - 2026-03-07
 
diff --git a/src/formatters/luau.rs b/src/formatters/luau.rs
index bfc09dc5..39ee231a 100644
--- a/src/formatters/luau.rs
+++ b/src/formatters/luau.rs
@@ -1505,7 +1505,13 @@ pub fn format_type_instantiation(
 ) -> TypeInstantiation {
     let outer_arrows = format_contained_span(ctx, type_instantiation.outer_arrows(), shape);
     let inner_arrows = format_contained_span(ctx, type_instantiation.inner_arrows(), shape);
-    let types = format_punctuated(ctx, type_instantiation.types(), shape, format_type_info);
+    let context = TypeInfoContext::new().mark_within_generic();
+    let types = format_punctuated(
+        ctx,
+        type_instantiation.types(),
+        shape,
+        |ctx, type_info, shape| format_type_info_internal(ctx, type_info, context, shape),
+    );
 
     type_instantiation
         .to_owned()
diff --git a/tests/inputs-luau/type-instantiation-type-pack.lua b/tests/inputs-luau/type-instantiation-type-pack.lua
new file mode 100644
index 00000000..c62057cb
--- /dev/null
+++ b/tests/inputs-luau/type-instantiation-type-pack.lua
@@ -0,0 +1,9 @@
+-- https://github.com/JohnnyMorganz/StyLua/issues/1089
+
+local function f(...: T...) end
+
+f<<(number)>>(10)
+f<<(string, number)>>(10, "a")
+
+local t = {}
+t:method<<(number)>>(10)
diff --git a/tests/snapshots/tests__luau@type-instantiation-type-pack.lua.snap b/tests/snapshots/tests__luau@type-instantiation-type-pack.lua.snap
new file mode 100644
index 00000000..e11ec69a
--- /dev/null
+++ b/tests/snapshots/tests__luau@type-instantiation-type-pack.lua.snap
@@ -0,0 +1,15 @@
+---
+source: tests/tests.rs
+expression: "format(&contents, LuaVersion::Luau)"
+input_file: tests/inputs-luau/type-instantiation-type-pack.lua
+---
+-- https://github.com/JohnnyMorganz/StyLua/issues/1089
+
+local function f(...: T...) end
+
+f<<(number)>>(10)
+f<<(string, number)>>(10, "a")
+
+local t = {}
+t:method<<(number)>>(10)
+