diff --git a/mlir/lib/TableGen/CMakeLists.txt b/mlir/lib/TableGen/CMakeLists.txt
index 48ad446cb04e..89e0f024664c 100644
--- a/mlir/lib/TableGen/CMakeLists.txt
+++ b/mlir/lib/TableGen/CMakeLists.txt
@@ -5,6 +5,7 @@ add_llvm_library(LLVMMLIRTableGen
   Dialect.cpp
   Format.cpp
   Operator.cpp
+  OpInterfaces.cpp
   OpTrait.cpp
   Pattern.cpp
   Predicate.cpp