diff --git a/include/spt/Dialect/FIRRTL/IR/FIRRTL.td b/include/spt/Dialect/FIRRTL/IR/FIRRTL.td
index ff3fea4a18..9493261b3a 100644
--- a/include/spt/Dialect/FIRRTL/IR/FIRRTL.td
+++ b/include/spt/Dialect/FIRRTL/IR/FIRRTL.td
@@ -8,6 +8,7 @@
 #define FIRRTL_OPS
 
 include "mlir/IR/OpBase.td"
+include "mlir/Interfaces/SideEffects.td"
 
 def FIRRTLDialect : Dialect {
   let name = "firrtl";
diff --git a/include/spt/Dialect/FIRRTL/IR/Ops.h b/include/spt/Dialect/FIRRTL/IR/Ops.h
index eb24c7fd0b..74e63ddf43 100644
--- a/include/spt/Dialect/FIRRTL/IR/Ops.h
+++ b/include/spt/Dialect/FIRRTL/IR/Ops.h
@@ -12,6 +12,7 @@
 #include "mlir/IR/FunctionSupport.h"
 #include "mlir/IR/OpDefinition.h"
 #include "mlir/IR/SymbolTable.h"
+#include "mlir/Interfaces/SideEffects.h"
 
 namespace spt {
 namespace firrtl {