diff --git a/rust/libnotcurses-sys/Cargo.toml b/rust/libnotcurses-sys/Cargo.toml
index 7164a5822..58bb2c7be 100644
--- a/rust/libnotcurses-sys/Cargo.toml
+++ b/rust/libnotcurses-sys/Cargo.toml
@@ -21,9 +21,8 @@ keywords = ["tui", "cli", "terminal", "ncurses", "ffi"]
 [dependencies]
 libc = {version = "0.2.74", default-features = false}
 cty = "0.2.1"
-# blocked by: https://github.com/Amanieu/cstr_core/issues/4
-# cstr_core = "0.2"
-cstr_core = {path = "../../../../_temp_clones/cstr_core"}
+# cstr_core = "0.2" # waiting for the next version after 0.2.0
+cstr_core = {git= "https://github.com/Amanieu/cstr_core"}
 libc-print = "0.1.13"
 
 [build-dependencies]
diff --git a/rust/libnotcurses-sys/src/key.rs b/rust/libnotcurses-sys/src/key.rs
index e4ec969dc..a64a2f066 100644
--- a/rust/libnotcurses-sys/src/key.rs
+++ b/rust/libnotcurses-sys/src/key.rs
@@ -11,13 +11,12 @@
 // --------------
 // nckey_mouse_p
 // nckey_supppuab_p
-//
 
-// use std::ffi::CString;
-//
+
 // use crate as ffi;
 // use crate::types::{ChannelPair, IntResult};
 
+
 // // Is this char32_t a Supplementary Private Use Area-B codepoint?
 // static inline bool
 // nckey_supppuab_p(char32_t w){
diff --git a/rust/libnotcurses-sys/src/nc.rs b/rust/libnotcurses-sys/src/nc.rs
index 298036925..518f893d1 100644
--- a/rust/libnotcurses-sys/src/nc.rs
+++ b/rust/libnotcurses-sys/src/nc.rs
@@ -51,8 +51,6 @@
 // notcurses_term_dim_yx
 
 
-// use std::ffi::CString;
-//
 // use crate as ffi;
 // use crate::types::{ChannelPair, IntResult};
 
diff --git a/rust/libnotcurses-sys/src/pixel.rs b/rust/libnotcurses-sys/src/pixel.rs
index 8b85b8c72..86c6038fe 100644
--- a/rust/libnotcurses-sys/src/pixel.rs
+++ b/rust/libnotcurses-sys/src/pixel.rs
@@ -22,8 +22,6 @@
 // ncpixel_set_rgb
 
 
-// use std::ffi::CString;
-//
 // use crate as ffi;
 // use crate::types::{ChannelPair, IntResult};