diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..a3736ec
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,15 @@
+#
+#  NOTE: Makefile's target name should not be the same as one of the file or directory in the current directory, 
+#    otherwise the target will not be executed!
+#
+
+
+deploy: 
+	sudo guix system reconfigure ./config.scm
+
+pull:
+	echo "Pulling all channel's git repositories..."
+	echo "Based on the gap between the current commit and the latest commit of guix's official repo, this operation may take a while..."
+	guix pull --channels=./channels.scm
+	guix describe --format=channels > ./channels.scm
+
diff --git a/README.md b/README.md
index f1c3914..ce68352 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,3 @@
 # guix-config
+
 My dotfiles for GNU Guix
diff --git a/channels.scm b/channels.scm
index bcd92b7..31d5d72 100644
--- a/channels.scm
+++ b/channels.scm
@@ -1,16 +1,18 @@
-(cons*
+(list
   ;; packages some non-free software which cannot be included in the official distribution
   (channel
     (name 'nonguix)
-    (url "https://gitlab.com/nonguix/nonguix")
+    (url "https://github.com/nonguix/nonguix")
     ;; Enable signature verification:
     (introduction
      (make-channel-introduction
       "897c1a470da759236cc11798f4e0a5f7d4d59fbc"
       (openpgp-fingerprint
        "2A39 3FFF 68F4 EF7A 3D29  12AF 6F51 20A0 22FB B2D5"))))
-  ;; default guix channel(Mirror in China)
+  ;; default guix channel
+  ;; https://git.savannah.gnu.org/cgit/guix.git/refs/heads
   (channel
     (inherit (car %default-channels))
-    (url "https://mirror.guix.org.cn/git/guix.git")))
+    ;; Stay on the version 1.4.0 to avoid too much update
+    (branch "version-1.4.0")))
 
diff --git a/config.scm b/config.scm
index 8dca58e..58b8c1b 100644
--- a/config.scm
+++ b/config.scm
@@ -57,16 +57,14 @@
       (set-xorg-configuration
        (xorg-configuration (keyboard-layout keyboard-layout))))
 
+      ;; This is the default list of services we
       ;; Using the substitute server of SJTU to speed up the download.
       (modify-services %desktop-services
       	(guix-service-type
       	 config => (guix-configuration
       	(inherit config)
-      	(substitute-urls '("https://mirror.sjtu.edu.cn/guix/" "https://ci.guix.gnu.org")))))
+      	(substitute-urls '("https://mirror.sjtu.edu.cn/guix/" "https://ci.guix.gnu.org")))))))
 
-      ;; This is the default list of services we
-      ;; are appending to.
-      %desktop-services))
   (bootloader (bootloader-configuration
                 (bootloader grub-bootloader)
                 (targets (list "/dev/sda"))