diff --git a/Cargo.toml b/Cargo.toml
index 2f42d96..c6d0289 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -22,7 +22,6 @@ include = ["/rust/src", "/rust/build.rs", "/src", "/include"]
 path = "rust/src/lib.rs"
 
 [dependencies]
-cty = "0.2.2"
 num_enum = "0.5.7"
 
 [build-dependencies]
diff --git a/rust/src/instruction.rs b/rust/src/instruction.rs
index 550f19e..d4866e0 100644
--- a/rust/src/instruction.rs
+++ b/rust/src/instruction.rs
@@ -19,7 +19,7 @@ pub struct Instruction {
 
 #[link(name = "rabbitizer", kind = "static")]
 extern "C" {
-    fn RabbitizerInstrId_getOpcodeName(unique_id: instr_id_enum::InstrId) -> *const cty::c_char;
+    fn RabbitizerInstrId_getOpcodeName(unique_id: instr_id_enum::InstrId) -> *const core::ffi::c_char;
 }
 
 extern "C" {
@@ -86,14 +86,14 @@ extern "C" {
     fn RabbitizerInstruction_getSizeForBuffer(
         self_: *const Instruction,
         immOverrideLength: utils::SizeT,
-        extraLJust: cty::c_int,
+        extraLJust: core::ffi::c_int,
     ) -> utils::SizeT;
     fn RabbitizerInstruction_disassemble(
         self_: *const Instruction,
-        dst: *mut cty::c_char,
-        immOverride: *const cty::c_char,
+        dst: *mut core::ffi::c_char,
+        immOverride: *const core::ffi::c_char,
         immOverrideLength: utils::SizeT,
-        extraLJust: cty::c_int,
+        extraLJust: core::ffi::c_int,
     ) -> utils::SizeT;
 }
 
@@ -683,7 +683,7 @@ impl Instruction {
             let mut buffer: Vec<u8> = vec![0; buffer_size.try_into().unwrap()];
             let disassembled_size = RabbitizerInstruction_disassemble(
                 self,
-                buffer.as_mut_ptr() as *mut cty::c_char,
+                buffer.as_mut_ptr() as *mut core::ffi::c_char,
                 imm_override_ptr,
                 imm_override_len,
                 extra_l_just.try_into().unwrap(),
diff --git a/rust/src/opereand_type.rs b/rust/src/opereand_type.rs
index c570f12..ed652d6 100644
--- a/rust/src/opereand_type.rs
+++ b/rust/src/opereand_type.rs
@@ -13,8 +13,8 @@ extern "C" {
     fn RabbitizerOperandType_disassemble(
         operand: operand_type_enum::OperandType,
         instr: *const instruction::Instruction,
-        dst: *mut cty::c_char,
-        immOverride: *const cty::c_char,
+        dst: *mut core::ffi::c_char,
+        immOverride: *const core::ffi::c_char,
         immOverrideLength: utils::SizeT,
     ) -> utils::SizeT;
 }
@@ -30,7 +30,7 @@ impl operand_type_enum::OperandType {
             let disassembled_size = RabbitizerOperandType_disassemble(
                 *self,
                 &instr,
-                buffer.as_mut_ptr() as *mut cty::c_char,
+                buffer.as_mut_ptr() as *mut core::ffi::c_char,
                 imm_override_ptr,
                 imm_override_len,
             );
diff --git a/rust/src/registers_methods.rs b/rust/src/registers_methods.rs
index 3abb040..16e5515 100644
--- a/rust/src/registers_methods.rs
+++ b/rust/src/registers_methods.rs
@@ -4,37 +4,37 @@
 use crate::registers_enum;
 
 extern "C" {
-    pub static mut RabbitizerRegister_GprO32_Names: [[*const cty::c_char; 2usize]; 0usize];
-    pub static mut RabbitizerRegister_GprN32_Names: [[*const cty::c_char; 2usize]; 0usize];
-    pub static mut RabbitizerRegister_Cop0_Names: [[*const cty::c_char; 2usize]; 0usize];
-    pub static mut RabbitizerRegister_Cop1O32_Names: [[*const cty::c_char; 2usize]; 0usize];
-    pub static mut RabbitizerRegister_Cop1N32_Names: [[*const cty::c_char; 2usize]; 0usize];
-    pub static mut RabbitizerRegister_Cop1N64_Names: [[*const cty::c_char; 2usize]; 0usize];
-    pub static mut RabbitizerRegister_Cop1Control_Names: [[*const cty::c_char; 2usize]; 0usize];
-    pub static mut RabbitizerRegister_Cop2_Names: [[*const cty::c_char; 2usize]; 0usize];
-    pub static mut RabbitizerRegister_RspGpr_Names: [[*const cty::c_char; 2usize]; 0usize];
-    pub static mut RabbitizerRegister_RspCop0_Names: [[*const cty::c_char; 2usize]; 0usize];
-    pub static mut RabbitizerRegister_RspCop2_Names: [[*const cty::c_char; 2usize]; 0usize];
-    pub static mut RabbitizerRegister_RspCop2Control_Names: [[*const cty::c_char; 2usize]; 0usize];
-    pub static mut RabbitizerRegister_RspVector_Names: [[*const cty::c_char; 2usize]; 0usize];
-    pub static mut RabbitizerRegister_R5900VF_Names: [[*const cty::c_char; 2usize]; 0usize];
-    pub static mut RabbitizerRegister_R5900VI_Names: [[*const cty::c_char; 2usize]; 0usize];
+    pub static mut RabbitizerRegister_GprO32_Names: [[*const core::ffi::c_char; 2usize]; 0usize];
+    pub static mut RabbitizerRegister_GprN32_Names: [[*const core::ffi::c_char; 2usize]; 0usize];
+    pub static mut RabbitizerRegister_Cop0_Names: [[*const core::ffi::c_char; 2usize]; 0usize];
+    pub static mut RabbitizerRegister_Cop1O32_Names: [[*const core::ffi::c_char; 2usize]; 0usize];
+    pub static mut RabbitizerRegister_Cop1N32_Names: [[*const core::ffi::c_char; 2usize]; 0usize];
+    pub static mut RabbitizerRegister_Cop1N64_Names: [[*const core::ffi::c_char; 2usize]; 0usize];
+    pub static mut RabbitizerRegister_Cop1Control_Names: [[*const core::ffi::c_char; 2usize]; 0usize];
+    pub static mut RabbitizerRegister_Cop2_Names: [[*const core::ffi::c_char; 2usize]; 0usize];
+    pub static mut RabbitizerRegister_RspGpr_Names: [[*const core::ffi::c_char; 2usize]; 0usize];
+    pub static mut RabbitizerRegister_RspCop0_Names: [[*const core::ffi::c_char; 2usize]; 0usize];
+    pub static mut RabbitizerRegister_RspCop2_Names: [[*const core::ffi::c_char; 2usize]; 0usize];
+    pub static mut RabbitizerRegister_RspCop2Control_Names: [[*const core::ffi::c_char; 2usize]; 0usize];
+    pub static mut RabbitizerRegister_RspVector_Names: [[*const core::ffi::c_char; 2usize]; 0usize];
+    pub static mut RabbitizerRegister_R5900VF_Names: [[*const core::ffi::c_char; 2usize]; 0usize];
+    pub static mut RabbitizerRegister_R5900VI_Names: [[*const core::ffi::c_char; 2usize]; 0usize];
 
     /*
-    pub fn RabbitizerRegister_getNameGpr(reg_value: u8) -> *const cty::c_char;
-    pub fn RabbitizerRegister_getNameCop0(reg_value: u8) -> *const cty::c_char;
-    pub fn RabbitizerRegister_getNameCop1(reg_value: u8) -> *const cty::c_char;
-    pub fn RabbitizerRegister_getNameCop1Control(reg_value: u8) -> *const cty::c_char;
-    pub fn RabbitizerRegister_getNameCop2(reg_value: u8) -> *const cty::c_char;
+    pub fn RabbitizerRegister_getNameGpr(reg_value: u8) -> *const core::ffi::c_char;
+    pub fn RabbitizerRegister_getNameCop0(reg_value: u8) -> *const core::ffi::c_char;
+    pub fn RabbitizerRegister_getNameCop1(reg_value: u8) -> *const core::ffi::c_char;
+    pub fn RabbitizerRegister_getNameCop1Control(reg_value: u8) -> *const core::ffi::c_char;
+    pub fn RabbitizerRegister_getNameCop2(reg_value: u8) -> *const core::ffi::c_char;
 
-    pub fn RabbitizerRegister_getNameRspGpr(reg_value: u8) -> *const cty::c_char;
-    pub fn RabbitizerRegister_getNameRspCop0(reg_value: u8) -> *const cty::c_char;
-    pub fn RabbitizerRegister_getNameRspCop2(reg_value: u8) -> *const cty::c_char;
-    pub fn RabbitizerRegister_getNameRspCop2Control(reg_value: u8) -> *const cty::c_char;
-    pub fn RabbitizerRegister_getNameRspVector(reg_value: u8) -> *const cty::c_char;
+    pub fn RabbitizerRegister_getNameRspGpr(reg_value: u8) -> *const core::ffi::c_char;
+    pub fn RabbitizerRegister_getNameRspCop0(reg_value: u8) -> *const core::ffi::c_char;
+    pub fn RabbitizerRegister_getNameRspCop2(reg_value: u8) -> *const core::ffi::c_char;
+    pub fn RabbitizerRegister_getNameRspCop2Control(reg_value: u8) -> *const core::ffi::c_char;
+    pub fn RabbitizerRegister_getNameRspVector(reg_value: u8) -> *const core::ffi::c_char;
 
-    pub fn RabbitizerRegister_getNameR5900VF(reg_value: u8) -> *const cty::c_char;
-    pub fn RabbitizerRegister_getNameR5900VI(reg_value: u8) -> *const cty::c_char;
+    pub fn RabbitizerRegister_getNameR5900VF(reg_value: u8) -> *const core::ffi::c_char;
+    pub fn RabbitizerRegister_getNameR5900VI(reg_value: u8) -> *const core::ffi::c_char;
     */
 }
 
diff --git a/rust/src/utils.rs b/rust/src/utils.rs
index 260df64..d8bafdb 100644
--- a/rust/src/utils.rs
+++ b/rust/src/utils.rs
@@ -4,9 +4,9 @@
 pub type SizeT = usize;
 
 
-pub fn c_string_from_str(str: Option<&str>) -> (*const cty::c_char, SizeT) {
+pub fn c_string_from_str(str: Option<&str>) -> (*const core::ffi::c_char, SizeT) {
     if let Some(str) = str {
-        (str.as_ptr() as *const cty::c_char, str.len().try_into().unwrap())
+        (str.as_ptr() as *const core::ffi::c_char, str.len().try_into().unwrap())
     } else {
         (std::ptr::null(), 0)
     }