diff --git a/src/arch/arm/insts/crypto.hh b/src/arch/arm/insts/crypto.hh
index 23eda5b8ab..089cbe5726 100644
--- a/src/arch/arm/insts/crypto.hh
+++ b/src/arch/arm/insts/crypto.hh
@@ -38,6 +38,8 @@
 #ifndef __ARCH_ARM_INSTS_CRYPTO_HH__
 #define __ARCH_ARM_INSTS_CRYPTO_HH__
 
+#include <cstdint>
+
 namespace gem5
 {
 
diff --git a/src/base/cprintf_formats.hh b/src/base/cprintf_formats.hh
index 02ba49699e..4a64780c4a 100644
--- a/src/base/cprintf_formats.hh
+++ b/src/base/cprintf_formats.hh
@@ -29,6 +29,7 @@
 #ifndef __BASE_CPRINTF_FORMATS_HH__
 #define __BASE_CPRINTF_FORMATS_HH__
 
+#include <cstdint>
 #include <cstring>
 #include <ostream>
 #include <sstream>
diff --git a/src/mem/ruby/common/Histogram.hh b/src/mem/ruby/common/Histogram.hh
index bfd3ae0aba..cdc27af11f 100644
--- a/src/mem/ruby/common/Histogram.hh
+++ b/src/mem/ruby/common/Histogram.hh
@@ -29,6 +29,7 @@
 #ifndef __MEM_RUBY_COMMON_HISTOGRAM_HH__
 #define __MEM_RUBY_COMMON_HISTOGRAM_HH__
 
+#include <cstdint>
 #include <iostream>
 #include <vector>