diff --git a/.gitignore b/.gitignore
index e613a74..71707ec 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,3 +6,4 @@
 xcuserdata/
 .swiftpm
 /Package.resolved
+.vscode/
\ No newline at end of file
diff --git a/Sources/Tracing/SpanProtocol.swift b/Sources/Tracing/SpanProtocol.swift
index 275fa2f..a207618 100644
--- a/Sources/Tracing/SpanProtocol.swift
+++ b/Sources/Tracing/SpanProtocol.swift
@@ -713,6 +713,11 @@ extension SpanAttributes {
     public var isEmpty: Bool {
         self._attributes.isEmpty
     }
+
+    /// Reserves enough space to store the specified number of attributes.
+    public mutating func reserveCapacity(_ minimumCapacity: Int) {
+        self._attributes.reserveCapacity(minimumCapacity)
+    }
 }
 
 extension SpanAttributes {