diff --git a/cpp/src/slice2js/Gen.cpp b/cpp/src/slice2js/Gen.cpp
index 9e11d7b4bad..65c605c45a6 100644
--- a/cpp/src/slice2js/Gen.cpp
+++ b/cpp/src/slice2js/Gen.cpp
@@ -8,6 +8,7 @@
 #include <IceUtil/UUID.h>
 #include <Slice/FileTracker.h>
 #include <Slice/Util.h>
+#include <algorithm>
 #include <iterator>
 
 // TODO: fix this warning!
diff --git a/cpp/src/slice2objc/Gen.cpp b/cpp/src/slice2objc/Gen.cpp
index 8a544d090a7..f83f390fc24 100644
--- a/cpp/src/slice2objc/Gen.cpp
+++ b/cpp/src/slice2objc/Gen.cpp
@@ -15,6 +15,7 @@
 #include <Slice/FileTracker.h>
 #include <Slice/Util.h>
 #include <string.h>
+#include <algorithm>
 #include <iterator>
 
 using namespace std;
diff --git a/cpp/src/slice2swift/Gen.cpp b/cpp/src/slice2swift/Gen.cpp
index 0624473c70c..4ee8ae7a3bf 100644
--- a/cpp/src/slice2swift/Gen.cpp
+++ b/cpp/src/slice2swift/Gen.cpp
@@ -9,6 +9,7 @@
 #include <Slice/FileTracker.h>
 #include <Slice/Util.h>
 
+#include <algorithm>
 #include <iterator>
 
 #include "Gen.h"