diff --git a/Sources/_StringProcessing/Engine/MEQuantify.swift b/Sources/_StringProcessing/Engine/MEQuantify.swift
index b3d4818b0..48bbb9e9c 100644
--- a/Sources/_StringProcessing/Engine/MEQuantify.swift
+++ b/Sources/_StringProcessing/Engine/MEQuantify.swift
@@ -1,3 +1,5 @@
+internal import _RegexParser
+
 private typealias ASCIIBitset = DSLTree.CustomCharacterClass.AsciiBitset
 
 extension Processor {
diff --git a/Sources/_StringProcessing/Engine/Processor.swift b/Sources/_StringProcessing/Engine/Processor.swift
index ff2b9037f..d6b2cfe0c 100644
--- a/Sources/_StringProcessing/Engine/Processor.swift
+++ b/Sources/_StringProcessing/Engine/Processor.swift
@@ -9,6 +9,7 @@
 //
 //===----------------------------------------------------------------------===//
 
+internal import _RegexParser
 
 enum MatchMode {
   case wholeString
diff --git a/Sources/_StringProcessing/Regex/Match.swift b/Sources/_StringProcessing/Regex/Match.swift
index f13b01a85..0b0b2e797 100644
--- a/Sources/_StringProcessing/Regex/Match.swift
+++ b/Sources/_StringProcessing/Regex/Match.swift
@@ -9,6 +9,8 @@
 //
 //===----------------------------------------------------------------------===//
 
+internal import _RegexParser
+
 @available(SwiftStdlib 5.7, *)
 extension Regex {
   /// The result of matching a regular expression against a string.
diff --git a/Sources/_StringProcessing/Unicode/NFC.swift b/Sources/_StringProcessing/Unicode/NFC.swift
index 59d195bb6..28ba15351 100644
--- a/Sources/_StringProcessing/Unicode/NFC.swift
+++ b/Sources/_StringProcessing/Unicode/NFC.swift
@@ -9,6 +9,8 @@
 //
 //===----------------------------------------------------------------------===//
 
+internal import _RegexParser
+
 @_spi(_Unicode)
 import Swift
 
diff --git a/Sources/_StringProcessing/Unicode/ScalarProps.swift b/Sources/_StringProcessing/Unicode/ScalarProps.swift
index 8864fd459..5344ce065 100644
--- a/Sources/_StringProcessing/Unicode/ScalarProps.swift
+++ b/Sources/_StringProcessing/Unicode/ScalarProps.swift
@@ -9,6 +9,8 @@
 //
 //===----------------------------------------------------------------------===//
 
+internal import _RegexParser
+
 @_silgen_name("_swift_string_processing_getScript")
 func _swift_string_processing_getScript(_: UInt32) -> UInt8
 
diff --git a/Sources/_StringProcessing/Unicode/WordBreaking.swift b/Sources/_StringProcessing/Unicode/WordBreaking.swift
index 10aadde32..a1f2f13a6 100644
--- a/Sources/_StringProcessing/Unicode/WordBreaking.swift
+++ b/Sources/_StringProcessing/Unicode/WordBreaking.swift
@@ -9,6 +9,8 @@
 //
 //===----------------------------------------------------------------------===//
 
+internal import _RegexParser
+
 @_spi(_Unicode)
 import Swift
 
diff --git a/Sources/_StringProcessing/Utility/TypedInt.swift b/Sources/_StringProcessing/Utility/TypedInt.swift
index e03f2572f..b85282eab 100644
--- a/Sources/_StringProcessing/Utility/TypedInt.swift
+++ b/Sources/_StringProcessing/Utility/TypedInt.swift
@@ -9,6 +9,7 @@
 //
 //===----------------------------------------------------------------------===//
 
+internal import _RegexParser
 
 // Just a phantom-typed Int wrapper.
 struct TypedInt<👻>: RawRepresentable, Hashable {