diff --git a/clang/include/clang/Interpreter/Interpreter.h b/clang/include/clang/Interpreter/Interpreter.h
index 43573fb1a4b89..e8a8745919a33 100644
--- a/clang/include/clang/Interpreter/Interpreter.h
+++ b/clang/include/clang/Interpreter/Interpreter.h
@@ -40,7 +40,7 @@ class IncrementalExecutor;
 class IncrementalParser;
 
 /// Create a pre-configured \c CompilerInstance for incremental processing.
-class IncrementalCompilerBuilder {
+class REPL_EXTERNAL_VISIBILITY IncrementalCompilerBuilder {
 public:
   IncrementalCompilerBuilder() {}
 
@@ -73,7 +73,7 @@ class IncrementalCompilerBuilder {
 };
 
 /// Provides top-level interfaces for incremental compilation and execution.
-class Interpreter {
+class REPL_EXTERNAL_VISIBILITY Interpreter {
   std::unique_ptr<llvm::orc::ThreadSafeContext> TSCtx;
   std::unique_ptr<IncrementalParser> IncrParser;
   std::unique_ptr<IncrementalExecutor> IncrExecutor;