diff --git a/Makefile b/Makefile
index 67aec3e..fee204a 100644
--- a/Makefile
+++ b/Makefile
@@ -6,7 +6,7 @@
 #    By: tmaze <marvin@42.fr>                       +#+  +:+       +#+         #
 #                                                 +#+#+#+#+#+   +#+            #
 #    Created: 2018/04/04 10:51:59 by tmaze             #+#    #+#              #
-#    Updated: 2018/04/04 17:17:24 by tmaze            ###   ########.fr        #
+#    Updated: 2018/04/04 18:34:41 by tmaze            ###   ########.fr        #
 #                                                                              #
 #******************************************************************************#
 
@@ -21,6 +21,8 @@ SRCS =	\
 		ft_strdup.c  \
 		ft_strcpy.c  \
 		ft_strncpy.c \
+		ft_strcat.c  \
+		ft_strncat.c \
 		ft_isalpha.c \
 		ft_isdigit.c \
 		ft_isalnum.c \
diff --git a/ft_strcat.c b/ft_strcat.c
new file mode 100644
index 0000000..557710c
--- /dev/null
+++ b/ft_strcat.c
@@ -0,0 +1,22 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_strcat.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: tmaze <marvin@42.fr>                       +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2018/04/04 17:56:56 by tmaze             #+#    #+#             */
+/*   Updated: 2018/04/04 18:21:46 by tmaze            ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+char	*ft_strcat(char *restrict dest, const char *src)
+{
+	int dest_len;
+
+	dest_len = ft_strlen(dest);
+	ft_strcpy(&dest[dest_len], src);
+	return (dest);
+}
diff --git a/ft_strncat.c b/ft_strncat.c
new file mode 100644
index 0000000..23de45b
--- /dev/null
+++ b/ft_strncat.c
@@ -0,0 +1,22 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_strncat.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: tmaze <marvin@42.fr>                       +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2018/04/04 18:29:06 by tmaze             #+#    #+#             */
+/*   Updated: 2018/04/04 18:34:17 by tmaze            ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+char	*ft_strncat(char *restrict dest, const char *src, size_t n)
+{
+	int		dest_len;
+	
+	dest_len = ft_strlen(dest);
+	ft_strncpy(&dest[dest_len], src, n);
+	return (dest);
+}
diff --git a/libft.h b/libft.h
index bfcea1e..e61678c 100644
--- a/libft.h
+++ b/libft.h
@@ -6,7 +6,7 @@
 /*   By: tmaze <marvin@42.fr>                       +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2018/04/04 10:40:01 by tmaze             #+#    #+#             */
-/*   Updated: 2018/04/04 15:30:00 by tmaze            ###   ########.fr       */
+/*   Updated: 2018/04/04 18:08:25 by tmaze            ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -31,7 +31,7 @@ size_t	ft_strlen(const char *s);
 char	*ft_strdup(const char *s);
 char	*ft_strcpy(char *dest, const char *src);
 char	*ft_strncpy(char *dest, const char *src, size_t n);
-char	*ft_strcat(char *dest, const char *src);
+char	*ft_strcat(char *restrict dest, const char *src);
 char	*ft_strncat(char *dest, const char *src, size_t n);
 size_t	ft_strlcat(char *dst, const char *src, size_t size);
 char	*ft_strchr(const char *s, int c);