diff --git a/src/env/env.c b/src/env/env.c
index fa841f7..82923f2 100644
--- a/src/env/env.c
+++ b/src/env/env.c
@@ -121,3 +121,24 @@ char *get_env_variable(lst** root, const char* key)
 	}
 	return (NULL);
 }
+
+int edit_env_variable(lst** root, const char *key, const char *new_value)
+{
+	lst* current = *root;
+	env* content;
+	
+	while (current != NULL)
+	{
+		content = current->content;
+		if (strcmp(content->key, key) == 0)
+		{
+			free(content->value);
+			content->value = strdup(new_value);
+			if (content->value == NULL)
+				return (2);
+			return (0);
+		}
+		current = current->next;
+	}
+	return (1);
+}
diff --git a/src/env/env.h b/src/env/env.h
index 1b5afcd..09a7578 100644
--- a/src/env/env.h
+++ b/src/env/env.h
@@ -7,7 +7,9 @@ typedef struct s_env
 	char *value;
 } env;
 
-int add_env_variable(lst** root, const char *key, const char *value);
 lst** env_init(const char **env);
 void env_del(void *ptr);
+
 char *get_env_variable(lst** root, const char* key);
+int add_env_variable(lst** root, const char *key, const char *value);
+int edit_env_variable(lst** root, const char *key, const char *new_value);