diff --git a/include/pocketpy/pocketpy.h b/include/pocketpy/pocketpy.h
index 45fd864c..38b18d4a 100644
--- a/include/pocketpy/pocketpy.h
+++ b/include/pocketpy/pocketpy.h
@@ -867,6 +867,7 @@ enum py_PredefinedType {
     tp_SyntaxError,
     tp_RecursionError,
     tp_OSError,
+    tp_PermissionError,
     tp_NotImplementedError,
     tp_TypeError,
     tp_IndexError,
diff --git a/src/interpreter/vm.c b/src/interpreter/vm.c
index dd4d7acb..ca2e182e 100644
--- a/src/interpreter/vm.c
+++ b/src/interpreter/vm.c
@@ -195,6 +195,7 @@ void VM__ctor(VM* self) {
     INJECT_BUILTIN_EXC(SyntaxError, tp_Exception);
     INJECT_BUILTIN_EXC(RecursionError, tp_Exception);
     INJECT_BUILTIN_EXC(OSError, tp_Exception);
+    INJECT_BUILTIN_EXC(PermissionError, tp_OSError);
     INJECT_BUILTIN_EXC(NotImplementedError, tp_Exception);
     INJECT_BUILTIN_EXC(TypeError, tp_Exception);
     INJECT_BUILTIN_EXC(IndexError, tp_Exception);