diff --git a/.emacs.d/lisp/init-guix.el b/.emacs.d/lisp/init-guix.el
index ebb0e196..2cb5a665 100644
--- a/.emacs.d/lisp/init-guix.el
+++ b/.emacs.d/lisp/init-guix.el
@@ -80,8 +80,8 @@ If MULTIPLE? is non-nil, return a list of (NAME FILE) of the selected manifests.
         (if multiple?
             (mapcar (lambda (name)
                       (assoc name files))
-                    (completing-read-multiple prompt (mapcar #'first files)))
-          (assoc (completing-read prompt (mapcar #'first files))
+                    (completing-read-multiple prompt (mapcar #'cl-first files)))
+          (assoc (completing-read prompt (mapcar #'cl-first files))
                  files))))))
 
 (defun ambrevar/guix-query-manifest (&optional manifest multiple?)
@@ -125,7 +125,7 @@ the channel specification."
   "Edit system.
 If SYSTEM is nil, it is queried from the systems found in `ambrevar/guix-system-directory'."
   (interactive)
-  (setq system (second (ambrevar/guix-query-system system)))
+  (setq system (cl-second (ambrevar/guix-query-system system)))
   (find-file system))
 (global-set-key (kbd "C-x c s") #'ambrevar/guix-edit-system)
 (with-eval-after-load 'evil
@@ -137,7 +137,7 @@ If SYSTEM is nil, it is queried from the systems found in `ambrevar/guix-system-
   "Edit MANIFEST.
 If MANIFEST is nil, it is queried from the manifests found in `ambrevar/guix-manifest-directory'."
   (interactive)
-  (setq manifest (second (ambrevar/guix-query-manifest manifest)))
+  (setq manifest (cl-second (ambrevar/guix-query-manifest manifest)))
   (find-file manifest))
 (global-set-key (kbd "C-x c g") #'ambrevar/guix-edit-manifest)
 (with-eval-after-load 'evil
@@ -154,7 +154,7 @@ If MANIFEST is nil, it is queried from the manifests found in `ambrevar/guix-man
 (defun ambrevar/guix-find-channel-from-manifest (pattern)
   "Return the channel specification file matching PATTERN in
 `ambrevar/guix-channel-spec-directory'."
-  (first (directory-files ambrevar/guix-channel-spec-directory 'full
+  (cl-first (directory-files ambrevar/guix-channel-spec-directory 'full
                           (concat pattern "-channel"))))
 
 (defun ambrevar/run-in-eshell (command)
@@ -194,7 +194,7 @@ If MANIFEST is nil, it is queried from the manifests found in `ambrevar/guix-man
   (let* ((guix (if channel
                    (let ((dest (expand-file-name
                                 ;; TODO: What name should we use with multiple manifests?
-                                (first (first manifests))
+                                (cl-first (cl-first manifests))
                                 ambrevar/guix-extra-channels)))
                      (make-directory dest 'parents)
                      (format "guix pull --channels=%s --profile=%s/guix && %s/guix/bin/guix"
@@ -203,7 +203,7 @@ If MANIFEST is nil, it is queried from the manifests found in `ambrevar/guix-man
                              (shell-quote-argument dest)))
                  "guix")))
     (dolist (manifest-pair manifests)
-      (let ((manifest-name (first manifest-pair)))
+      (let ((manifest-name (cl-first manifest-pair)))
         (make-directory (expand-file-name manifest-name
                                           ambrevar/guix-extra-profiles)
                         'parents)))
@@ -212,8 +212,8 @@ If MANIFEST is nil, it is queried from the manifests found in `ambrevar/guix-man
                'ambrevar/run-in-shell)
              (mapconcat #'identity
                         (mapcar (lambda (manifest-pair)
-                                  (let ((manifest-name (first manifest-pair))
-                                        (manifest (second manifest-pair))
+                                  (let ((manifest-name (cl-first manifest-pair))
+                                        (manifest (cl-second manifest-pair))
                                         (profile (expand-file-name ambrevar/guix-extra-profiles)))
                                     (string-join
                                      (list "echo" (format "'==> Installing manifest %S to profile %S'"
@@ -231,7 +231,7 @@ If MANIFEST is nil, it is queried from the manifests found in `ambrevar/guix-man
     (unless channel
       ;; TODO: Only do this when manifest install has succeeded.
       (dolist (manifest-pair manifests)
-        (let ((manifest-name (first manifest-pair)))
+        (let ((manifest-name (cl-first manifest-pair)))
           (ambrevar/guix-save-channel-specs
            (format "%s/guix-%s-channels.scm"
                    ambrevar/guix-channel-spec-directory
@@ -250,11 +250,11 @@ non-nil, then try to use a channel specification file from
 `ambrevar/guix-channel-spec-directory' if any."
   (interactive)
   (let* ((manifest-pair (ambrevar/guix-query-manifest manifest))
-         (manifest-name (first manifest-pair))
-         (manifest (second manifest-pair))
+         (manifest-name (cl-first manifest-pair))
+         (manifest (cl-second manifest-pair))
          (channel (or channel
                       (and current-prefix-arg
-                           (second (ambrevar/guix-query-channel-spec)))
+                           (cl-second (ambrevar/guix-query-channel-spec)))
                       (and ambrevar/guix-always-use-channel-specs
                            (ambrevar/guix-find-channel-from-manifest manifest-name)))))
     (%ambrevar/guix-install-manifest (list manifest-pair) channel)))
@@ -270,7 +270,7 @@ With a prefix argument, query for a channel specification file."
   (let* ((manifests (or manifests (ambrevar/guix-query-manifest nil :multiple)))
          (channel (or channel
                       (and current-prefix-arg
-                           (second (ambrevar/guix-query-channel-spec))))))
+                           (cl-second (ambrevar/guix-query-channel-spec))))))
     (%ambrevar/guix-install-manifest manifests channel)))
 (global-set-key (kbd "C-x c G") #'ambrevar/guix-install-manifests)
 (with-eval-after-load 'evil
@@ -284,8 +284,8 @@ System is queried from those found in `ambrevar/guix-system-directory'. "
   (interactive)
   (require 'init-shell) ; For `helm-ff-preferred-shell-mode'.
   (let* ((system-pair (ambrevar/guix-query-system system))
-         (system-name (first system-pair))
-         (system (second system-pair)))
+         (system-name (cl-first system-pair))
+         (system (cl-second system-pair)))
     (funcall (if (eq helm-ff-preferred-shell-mode 'eshell-mode)
                  'ambrevar/run-in-eshell
                'ambrevar/run-in-shell)