diff --git a/third_party/angle/include/GLSLANG/ShaderVars.h b/third_party/angle/include/GLSLANG/ShaderVars.h
index 52f6ad077556..5d2d14683604 100644
--- a/third_party/angle/include/GLSLANG/ShaderVars.h
+++ b/third_party/angle/include/GLSLANG/ShaderVars.h
@@ -12,6 +12,7 @@
 
 #include <algorithm>
 #include <array>
+#include <cstdint>
 #include <string>
 #include <vector>
 
diff --git a/third_party/angle/src/common/angleutils.h b/third_party/angle/src/common/angleutils.h
index 3a1391e29b72..c8d36f551861 100644
--- a/third_party/angle/src/common/angleutils.h
+++ b/third_party/angle/src/common/angleutils.h
@@ -14,6 +14,7 @@
 #include <climits>
 #include <cstdarg>
 #include <cstddef>
+#include <cstdint>
 #include <set>
 #include <sstream>
 #include <string>
diff --git a/third_party/crashpad/util/misc/reinterpret_bytes.cc b/third_party/crashpad/util/misc/reinterpret_bytes.cc
index 65ec33f348ec..3fee722dea39 100644
--- a/third_party/crashpad/util/misc/reinterpret_bytes.cc
+++ b/third_party/crashpad/util/misc/reinterpret_bytes.cc
@@ -17,6 +17,7 @@
 #include <string.h>
 
 #include <algorithm>
+#include <cstdint>
 
 #include "base/logging.h"
 
diff --git a/third_party/v8/src/base/logging.h b/third_party/v8/src/base/logging.h
index fe39f988225e..dbe130581cb1 100644
--- a/third_party/v8/src/base/logging.h
+++ b/third_party/v8/src/base/logging.h
@@ -5,6 +5,7 @@
 #ifndef V8_BASE_LOGGING_H_
 #define V8_BASE_LOGGING_H_
 
+#include <cstdint>
 #include <cstring>
 #include <sstream>
 #include <string>
diff --git a/third_party/v8/src/base/macros.h b/third_party/v8/src/base/macros.h
index 1fa3227ec804..a5ad1b77684a 100644
--- a/third_party/v8/src/base/macros.h
+++ b/third_party/v8/src/base/macros.h
@@ -5,6 +5,7 @@
 #ifndef V8_BASE_MACROS_H_
 #define V8_BASE_MACROS_H_
 
+#include <cstdint>
 #include <limits>
 #include <type_traits>
 
diff --git a/third_party/v8/src/inspector/v8-string-conversions.h b/third_party/v8/src/inspector/v8-string-conversions.h
index 285667e27e4b..2770ec362d8b 100644
--- a/third_party/v8/src/inspector/v8-string-conversions.h
+++ b/third_party/v8/src/inspector/v8-string-conversions.h
@@ -5,6 +5,7 @@
 #ifndef V8_INSPECTOR_V8_STRING_CONVERSIONS_H_
 #define V8_INSPECTOR_V8_STRING_CONVERSIONS_H_
 
+#include <cstdint>
 #include <string>
 
 // The v8config.h above is needed to turn on V8_OS_STARBOARD