diff --git a/core/autoload/system.el b/core/autoload/system.el
index 827a89a19..2dc57368a 100644
--- a/core/autoload/system.el
+++ b/core/autoload/system.el
@@ -22,11 +22,11 @@
   "Runs a shell command and prints any output to the DOOM buffer."
   (let ((cmd-list (split-string command " ")))
     (cond ((equal (car cmd-list) "sudo")
-           (apply 'doom-sudo (string-join (cdr cmd-list) " ") args))
+           (apply 'doom-sudo (s-join " " (cdr cmd-list)) args))
           ((let ((bin (executable-find "npm")))
              (and (file-exists-p bin)
                   (not (file-writable-p bin))))
-           (apply 'doom-sudo (string-join cmd-list " ") args))
+           (apply 'doom-sudo (s-join " " cmd-list) args))
           (t
            (princ (shell-command-to-string (apply 'format command args)))))))
 
diff --git a/modules/feature/version-control/autoload.el b/modules/feature/version-control/autoload.el
index 1d29ecf9f..911f219ed 100644
--- a/modules/feature/version-control/autoload.el
+++ b/modules/feature/version-control/autoload.el
@@ -17,7 +17,7 @@ Fallback to repository root."
       (error
        (setq url (shell-command-to-string "hub browse -u --"))
        (setq url (if url
-                     (concat (string-trim url) "/"
+                     (concat (s-trim url) "/"
                              (file-relative-name (buffer-file-name)
                                                  (doom-project-root))
                              (when (use-region-p)
diff --git a/modules/lang/python/packages.el b/modules/lang/python/packages.el
index f29b5666c..38e4486cf 100644
--- a/modules/lang/python/packages.el
+++ b/modules/lang/python/packages.el
@@ -20,5 +20,5 @@
   (when-let (pkgs (cl-remove-if
                    (lambda (pkg) (zerop (shell-command (format "pip show %s" pkg))))
                    '("jedi" "setuptools")))
-    (sh "pip install %s" (string-join pkgs " "))
+    (sh "pip install %s" (s-join " " pkgs))
     t))
diff --git a/modules/lang/rust/packages.el b/modules/lang/rust/packages.el
index 7805fc351..723fedf3c 100644
--- a/modules/lang/rust/packages.el
+++ b/modules/lang/rust/packages.el
@@ -18,7 +18,7 @@
        (unless (executable-find "rustc") (push "rust" pkgs))
        (unless (executable-find "cargo") (push "cargo" pkgs))
        (when pkgs
-         (sudo "pacman --noconfirm -S %s" (string-join pkgs " ")))))
+         (sudo "pacman --noconfirm -S %s" (s-join " " pkgs)))))
     ('debian) ;; TODO
     ('macos
      (unless (executable-find "rustc")
diff --git a/modules/lang/sh/packages.el b/modules/lang/sh/packages.el
index cf008077d..664fad280 100644
--- a/modules/lang/sh/packages.el
+++ b/modules/lang/sh/packages.el
@@ -7,7 +7,7 @@
 ;;
 (def-bootstrap! sh
   (when-let (progs (cl-remove-if 'executable-find '("zshdb" "bashdb" "shellcheck")))
-    (let ((prog-str (string-join progs " ")))
+    (let ((prog-str (s-join " " progs)))
       (pcase (doom-system-os)
         ('arch
          (sudo "pacman --noconfirm -S %s" prog-str))
diff --git a/modules/tools/electric-indent/config.el b/modules/tools/electric-indent/config.el
index 5f3af0324..46f5fb917 100644
--- a/modules/tools/electric-indent/config.el
+++ b/modules/tools/electric-indent/config.el
@@ -26,7 +26,7 @@ trigger electric indentation."
         (chars (plist-get plist :chars))
         (words (plist-get plist :words)))
     (when (or chars words)
-      (let ((fn-name (intern (format "doom--electric-%s" (string-join (mapcar 'symbol-name modes) "-")))))
+      (let ((fn-name (intern (format "doom--electric-%s" (s-join "-" (mapcar 'symbol-name modes))))))
         `(progn
            (defun ,fn-name ()
              (electric-indent-local-mode +1)