diff --git a/compiler/erg_compiler/lib/pystd/os.d/__init__.d.er b/compiler/erg_compiler/lib/pystd/os.d/__init__.d.er
index a9d3340e..3c3ab046 100644
--- a/compiler/erg_compiler/lib/pystd/os.d/__init__.d.er
+++ b/compiler/erg_compiler/lib/pystd/os.d/__init__.d.er
@@ -15,3 +15,6 @@
 
 # posix = pyimport "posix"
 # .uname!: () => posix.UnameResult
+
+.getrandom!: (size: Nat) => Bytes
+.urandom!: (size: Nat) => Bytes
diff --git a/compiler/erg_compiler/lib/pystd/os.d/path.d.er b/compiler/erg_compiler/lib/pystd/os.d/path.d.er
index e20e9f7d..87caeb25 100644
--- a/compiler/erg_compiler/lib/pystd/os.d/path.d.er
+++ b/compiler/erg_compiler/lib/pystd/os.d/path.d.er
@@ -1 +1,9 @@
+.dirname!: (path: PathLike,) => Str
+.exists!: (path: PathLike,) => Bool
+.lexists!: (path: PathLike,) => Bool
 .expanduser!: (path: PathLike,) => Str
+.expandvars!: (path: PathLike,) => Str
+.isfile!: (path: PathLike,) => Bool
+.isdir!: (path: PathLike,) => Bool
+.islink!: (path: PathLike,) => Bool
+.ismount!: (path: PathLike,) => Bool