diff --git a/audio/dsp/number_util.cc b/audio/dsp/number_util.cc
index 756e1f8..6a0c6d6 100644
--- a/audio/dsp/number_util.cc
+++ b/audio/dsp/number_util.cc
@@ -16,6 +16,7 @@
 
 #include "audio/dsp/number_util.h"
 
+#include <algorithm>
 #include <cmath>
 #include <iomanip>
 #include <limits>
diff --git a/audio/dsp/porting.cc b/audio/dsp/porting.cc
index e906d2d..753c286 100644
--- a/audio/dsp/porting.cc
+++ b/audio/dsp/porting.cc
@@ -16,6 +16,7 @@
 
 #include "audio/dsp/porting.h"
 
+#include <algorithm>
 #include <cfloat>
 #include <cstdarg>