diff --git a/stdlib/public/Concurrency/Deque/Compatibility.swift b/stdlib/public/Concurrency/Deque/Compatibility.swift
index 37dc9bf8eecb9..98ec1ae883f8d 100644
--- a/stdlib/public/Concurrency/Deque/Compatibility.swift
+++ b/stdlib/public/Concurrency/Deque/Compatibility.swift
@@ -33,7 +33,7 @@ extension Array {
     // The bug is caused by a bogus precondition inside a non-inlinable stdlib
     // method, so to determine if we're affected, we need to check the currently
     // running OS version.
-    #if os(macOS) || os(iOS) || os(watchOS) || os(tvOS)
+    #if os(macOS) || os(iOS) || os(watchOS) || os(tvOS) || os(visionOS)
     guard #available(macOS 10.15, iOS 13, watchOS 6, tvOS 13, *) else {
       // The OS is too old to be affected by this bug.
       return false
diff --git a/stdlib/public/libexec/swift-backtrace/Utils.swift b/stdlib/public/libexec/swift-backtrace/Utils.swift
index 50231f5cc1205..b9b329607bb36 100644
--- a/stdlib/public/libexec/swift-backtrace/Utils.swift
+++ b/stdlib/public/libexec/swift-backtrace/Utils.swift
@@ -98,7 +98,7 @@ internal func recursiveRemoveContents(_ dir: String) throws {
   while let dp = readdir(dirp) {
     let name: String =
       withUnsafePointer(to: &dp.pointee.d_name) {
-#if os(macOS) || os(iOS) || os(watchOS) || os(tvOS)
+#if os(macOS) || os(iOS) || os(watchOS) || os(tvOS) || os(visionOS)
         let len = Int(dp.pointee.d_namlen)
 #else
         let len = Int(strlen($0))
diff --git a/stdlib/public/libexec/swift-backtrace/main.swift b/stdlib/public/libexec/swift-backtrace/main.swift
index ea05e26298150..c519d9f3b46bd 100644
--- a/stdlib/public/libexec/swift-backtrace/main.swift
+++ b/stdlib/public/libexec/swift-backtrace/main.swift
@@ -708,7 +708,7 @@ Generate a backtrace for the parent process.
         backtraceFormatter.writeCrashLog(now: formatISO8601(now))
     }
 
-    #if os(macOS) || os(iOS) || os(watchOS) || os(tvOS)
+  #if os(macOS) || os(iOS) || os(watchOS) || os(tvOS) || os(visionOS)
     // On Darwin, if Developer Mode is turned off, or we can't tell if it's
     // on or not, disable interactivity
     var developerMode: Int32 = 0
@@ -772,7 +772,7 @@ Generate a backtrace for the parent process.
     }
   }
 
-  #if os(Linux) || os(macOS) || os(iOS) || os(watchOS) || os(tvOS)
+  #if os(Linux) || os(macOS) || os(iOS) || os(watchOS) || os(tvOS) || os(visionOS)
   static func setRawMode() -> termios {
     var oldAttrs = termios()
     tcgetattr(0, &oldAttrs)