diff --git a/src/compiler/compiler.cpp b/src/compiler/compiler.cpp
index 60ec72f0..391855fc 100644
--- a/src/compiler/compiler.cpp
+++ b/src/compiler/compiler.cpp
@@ -2,6 +2,8 @@
 #include "pocketpy/common/config.h"
 #include "pocketpy/interpreter/vm.hpp"
 
+#include <cstdarg>
+
 namespace pkpy {
 
 #define consume(expected) if(!match(expected)) return SyntaxError("expected '%s', got '%s'", TK_STR(expected), TK_STR(curr().type));
diff --git a/src/compiler/lexer.cpp b/src/compiler/lexer.cpp
index eb7e051d..16846c6b 100644
--- a/src/compiler/lexer.cpp
+++ b/src/compiler/lexer.cpp
@@ -2,6 +2,8 @@
 #include "pocketpy/common/gil.hpp"
 #include "pocketpy/common/version.h"
 
+#include <cstdarg>
+
 namespace pkpy {
 
 // clang-format off