diff --git a/amalgamate.py b/amalgamate.py
index 990b99a0..6ae1b4cb 100644
--- a/amalgamate.py
+++ b/amalgamate.py
@@ -2,7 +2,7 @@ with open("src/opcodes.h", "rt", encoding='utf-8') as f:
 	OPCODES_TEXT = f.read()
 
 pipeline = [
-	["str.h", "builtins.h", "error.h"],
+	["__stl__.h", "str.h", "builtins.h", "error.h"],
 	["obj.h", "iter.h", "parser.h", "pointer.h", "codeobject.h"],
 	["vm.h", "compiler.h"],
 	["pocketpy.h"]
diff --git a/src/__stl__.h b/src/__stl__.h
new file mode 100644
index 00000000..2172f3bc
--- /dev/null
+++ b/src/__stl__.h
@@ -0,0 +1,18 @@
+#pragma once
+
+#include <sstream>
+#include <regex>
+#include <unordered_map>
+#include <memory>
+#include <variant>
+#include <functional>
+#include <stack>
+#include <cmath>
+#include <stdexcept>
+#include <vector>
+#include <string>
+#include <cstring>
+#include <chrono>
+#include <string_view>
+#include <queue>
+#include <iomanip>
\ No newline at end of file
diff --git a/src/compiler.h b/src/compiler.h
index 893bda60..ecb1b751 100644
--- a/src/compiler.h
+++ b/src/compiler.h
@@ -1,9 +1,5 @@
 #pragma once
 
-#include <vector>
-#include <string>
-#include <cstring>
-
 #include "parser.h"
 #include "error.h"
 #include "vm.h"
diff --git a/src/error.h b/src/error.h
index 4afbbd2c..6a5c60a0 100644
--- a/src/error.h
+++ b/src/error.h
@@ -1,9 +1,6 @@
 #pragma once
 
-#include <string>
-#include <vector>
-#include <stdexcept>
-
+#include "__stl__.h"
 #include "str.h"
 
 class NeedMoreLines {
diff --git a/src/main.cpp b/src/main.cpp
index a2f85132..e7cb21a2 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1,7 +1,6 @@
 #include <iostream>
 #include <fstream>
 
-#include <chrono>
 #include "pocketpy.h"
 
 //#define PK_DEBUG_TIME
diff --git a/src/obj.h b/src/obj.h
index 4d6d834e..4f247837 100644
--- a/src/obj.h
+++ b/src/obj.h
@@ -1,13 +1,6 @@
 #pragma once
 
-#include <unordered_map>
-#include <memory>
-#include <variant>
-#include <functional>
-#include <stack>
-#include <cmath>
-#include <stdexcept>
-
+#include "__stl__.h"
 #include "str.h"
 
 typedef int64_t _Int;
diff --git a/src/parser.h b/src/parser.h
index c9790241..5c149a81 100644
--- a/src/parser.h
+++ b/src/parser.h
@@ -1,9 +1,5 @@
 #pragma once
 
-#include <string_view>
-#include <cstring>
-#include <queue>
-
 #include "obj.h"
 
 typedef uint8_t _TokenType;
diff --git a/src/pocketpy.h b/src/pocketpy.h
index 7a8d32f2..7ca1a740 100644
--- a/src/pocketpy.h
+++ b/src/pocketpy.h
@@ -3,10 +3,6 @@
 #include "vm.h"
 #include "compiler.h"
 
-#include <iomanip>
-#include <cmath>
-#include <chrono>
-
 #define PK_VERSION "0.2.0"
 
 #define BIND_NUM_ARITH_OPT(name, op)                                                                    \
diff --git a/src/str.h b/src/str.h
index 7551bc0c..46c4f560 100644
--- a/src/str.h
+++ b/src/str.h
@@ -1,9 +1,6 @@
 #pragma once
 
-#include <vector>
-#include <string>
-#include <sstream>
-#include <regex>
+#include "__stl__.h"
 
 typedef std::stringstream _StrStream;