diff --git a/xo-expression2/src/expression2/IExpression_Any.cpp b/xo-expression2/src/expression2/IExpression_Any.cpp
index 9557e7e7..fe245c76 100644
--- a/xo-expression2/src/expression2/IExpression_Any.cpp
+++ b/xo-expression2/src/expression2/IExpression_Any.cpp
@@ -4,6 +4,7 @@
 
 #include "detail/IExpression_Any.hpp"
 #include <iostream>
+#include <exception>
 
 namespace xo {
 namespace scm {
diff --git a/xo-expression2/src/expression2/ISymbolTable_Any.cpp b/xo-expression2/src/expression2/ISymbolTable_Any.cpp
index 95718429..31d324de 100644
--- a/xo-expression2/src/expression2/ISymbolTable_Any.cpp
+++ b/xo-expression2/src/expression2/ISymbolTable_Any.cpp
@@ -4,6 +4,7 @@
 
 #include "symtab/ISymbolTable_Any.hpp"
 #include <iostream>
+#include <exception>
 
 namespace xo {
 namespace scm {
diff --git a/xo-procedure2/src/procedure2/IProcedure_Any.cpp b/xo-procedure2/src/procedure2/IProcedure_Any.cpp
index dcdf9eeb..8ff611c7 100644
--- a/xo-procedure2/src/procedure2/IProcedure_Any.cpp
+++ b/xo-procedure2/src/procedure2/IProcedure_Any.cpp
@@ -4,6 +4,7 @@
 
 #include "detail/IProcedure_Any.hpp"
 #include <iostream>
+#include <exception>
 
 namespace xo {
 namespace scm {
diff --git a/xo-procedure2/src/procedure2/IRuntimeContext_Any.cpp b/xo-procedure2/src/procedure2/IRuntimeContext_Any.cpp
index 1ea5859a..195bd135 100644
--- a/xo-procedure2/src/procedure2/IRuntimeContext_Any.cpp
+++ b/xo-procedure2/src/procedure2/IRuntimeContext_Any.cpp
@@ -4,6 +4,7 @@
 
 #include "detail/IRuntimeContext_Any.hpp"
 #include <iostream>
+#include <exception>
 
 namespace xo {
 namespace scm {
diff --git a/xo-reader2/src/reader2/ISyntaxStateMachine_Any.cpp b/xo-reader2/src/reader2/ISyntaxStateMachine_Any.cpp
index 393fea04..4fa59332 100644
--- a/xo-reader2/src/reader2/ISyntaxStateMachine_Any.cpp
+++ b/xo-reader2/src/reader2/ISyntaxStateMachine_Any.cpp
@@ -4,6 +4,7 @@
 
 #include "ssm/ISyntaxStateMachine_Any.hpp"
 #include <iostream>
+#include <exception>
 
 namespace xo {
 namespace scm {