diff --git a/Sources/SourceKitD/SKDRequestArray.swift b/Sources/SourceKitD/SKDRequestArray.swift
index e91a6fd77..9e8b21630 100644
--- a/Sources/SourceKitD/SKDRequestArray.swift
+++ b/Sources/SourceKitD/SKDRequestArray.swift
@@ -12,6 +12,10 @@
 
 import Csourcekitd
 
+#if canImport(stdlib_h)
+import stdlib_h
+#endif
+
 #if canImport(Glibc)
 import Glibc
 #elseif canImport(Musl)
diff --git a/Sources/SourceKitD/SKDRequestDictionary.swift b/Sources/SourceKitD/SKDRequestDictionary.swift
index 9b56cacf8..6dea654a5 100644
--- a/Sources/SourceKitD/SKDRequestDictionary.swift
+++ b/Sources/SourceKitD/SKDRequestDictionary.swift
@@ -13,6 +13,10 @@
 import Csourcekitd
 import LSPLogging
 
+#if canImport(stdlib_h)
+import stdlib_h
+#endif
+
 #if canImport(Glibc)
 import Glibc
 #elseif canImport(Musl)
diff --git a/Sources/SourceKitD/SKDResponse.swift b/Sources/SourceKitD/SKDResponse.swift
index 3c5511608..42d438d08 100644
--- a/Sources/SourceKitD/SKDResponse.swift
+++ b/Sources/SourceKitD/SKDResponse.swift
@@ -13,6 +13,10 @@
 import Csourcekitd
 import LSPLogging
 
+#if canImport(stdlib_h)
+import stdlib_h
+#endif
+
 #if canImport(Glibc)
 import Glibc
 #elseif canImport(Musl)
diff --git a/Sources/SourceKitD/SKDResponseArray.swift b/Sources/SourceKitD/SKDResponseArray.swift
index 309a735a0..6bf3a49b2 100644
--- a/Sources/SourceKitD/SKDResponseArray.swift
+++ b/Sources/SourceKitD/SKDResponseArray.swift
@@ -12,6 +12,10 @@
 
 import Csourcekitd
 
+#if canImport(stdlib_h)
+import stdlib_h
+#endif
+
 #if canImport(Glibc)
 import Glibc
 #elseif canImport(Musl)
diff --git a/Sources/SourceKitD/SKDResponseDictionary.swift b/Sources/SourceKitD/SKDResponseDictionary.swift
index dc7a4562f..352d35580 100644
--- a/Sources/SourceKitD/SKDResponseDictionary.swift
+++ b/Sources/SourceKitD/SKDResponseDictionary.swift
@@ -12,6 +12,10 @@
 
 import Csourcekitd
 
+#if canImport(stdlib_h)
+import stdlib_h
+#endif
+
 #if canImport(Glibc)
 import Glibc
 #elseif canImport(Musl)