diff --git a/clang/lib/AST/ByteCode/DynamicAllocator.h b/clang/lib/AST/ByteCode/DynamicAllocator.h
index 1ed5dc843e4c8c..51829403d73228 100644
--- a/clang/lib/AST/ByteCode/DynamicAllocator.h
+++ b/clang/lib/AST/ByteCode/DynamicAllocator.h
@@ -97,7 +97,7 @@ class DynamicAllocator final {
 private:
   llvm::DenseMap<const Expr *, AllocationSite> AllocationSites;
 
-  using PoolAllocTy = llvm::BumpPtrAllocatorImpl<llvm::MallocAllocator>;
+  using PoolAllocTy = llvm::BumpPtrAllocator;
   PoolAllocTy DescAllocator;
 
   /// Allocates a new descriptor.
diff --git a/clang/lib/AST/ByteCode/Program.h b/clang/lib/AST/ByteCode/Program.h
index 9aabe67b550ec7..c9c3d20f198c6e 100644
--- a/clang/lib/AST/ByteCode/Program.h
+++ b/clang/lib/AST/ByteCode/Program.h
@@ -171,7 +171,7 @@ class Program final {
   llvm::DenseMap<const void *, unsigned> NativePointerIndices;
 
   /// Custom allocator for global storage.
-  using PoolAllocTy = llvm::BumpPtrAllocatorImpl<llvm::MallocAllocator>;
+  using PoolAllocTy = llvm::BumpPtrAllocator;
 
   /// Descriptor + storage for a global object.
   ///