diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 0cebbc7..a389bad 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -6,10 +6,10 @@ on:
 jobs:
   test:
     name: Approvals on Ubuntu
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-latest
     steps:
     - name: Checkout code
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
     - name: Install fzf
       run: sudo apt install -y fzf
     # - name: Setup tmate session
@@ -24,7 +24,7 @@ jobs:
     runs-on: macos-latest
     steps:
     - name: Checkout code
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
     - name: Install fzf
       run: brew install fzf
     - name: Run approval tests
@@ -35,7 +35,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout code
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
     - name: Run setup approval tests
       run: test/approve_setup
 
@@ -44,7 +44,15 @@ jobs:
     runs-on: macos-latest
     steps:
     - name: Checkout code
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
     - name: Run setup approval tests
       run: test/approve_setup
 
+  shellcheck:
+    name: Shellcheck
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v4
+    - name: Run shellcheck tests
+      run: shellcheck setup fuzzycd && echo PASS
diff --git a/fuzzycd b/fuzzycd
index f1874b4..60dee3e 100644
--- a/fuzzycd
+++ b/fuzzycd
@@ -7,9 +7,9 @@ fuzzycd_run() {
   _fzcd_is_dirname() {
     if [[ -d "$1" ]]; then
       return 0
-    
+
     elif [[ -n "$CDPATH" ]]; then
-      IFS=':' read -ra cdpath <<< "$CDPATH"
+      IFS=':' read -ra cdpath <<<"$CDPATH"
       for path in "${cdpath[@]}"; do
         [[ -d "$path/$1" ]] && return 0
       done
@@ -25,32 +25,32 @@ fuzzycd_run() {
   _fzcd_run_fzf() {
     # shellcheck disable=SC2145
     declare -a opts=(--query="$@" --bind="del:execute-silent(fuzzycd -d {})+reload(fuzzycd -s)" --select-1 --exit-0 --info=hidden --prompt="$ cd ")
-    
+
     case "$FUZZYCD_MODE" in
-      "m" )
+      "m")
         fzf --filter "$@" --exit-0 | head -1
         ;;
 
-      "i" )
+      "i")
         fzf "${opts[@]}"
         ;;
 
-      * )
+      *)
         fzf "${opts[@]}" --preview='ls {}' --preview-window="border-left"
         ;;
     esac
   }
 
   _fzcd_dir_search() {
-    _fzcd_run_fzf "$@" < "$histfile"
+    _fzcd_run_fzf "$@" <"$histfile"
   }
 
   _fzcd_remember_me() {
-    grep -qxF "$PWD" "$histfile" || echo "$PWD" >> "$histfile"
+    grep -qxF "$PWD" "$histfile" || echo "$PWD" >>"$histfile"
   }
 
   _fzcd_create_histfile() {
-    mkdir -p "$(dirname "$histfile")" && touch "$histfile";
+    mkdir -p "$(dirname "$histfile")" && touch "$histfile"
   }
 
   _fzcd_chdir() {
@@ -87,7 +87,7 @@ fuzzycd_run() {
 
   _fzcd_delete_dir() {
     dir="${1:-$PWD}"
-    grep -Fxv "$dir" "$histfile" > "$HOME/.fuzzycd-history.tmp"
+    grep -Fxv "$dir" "$histfile" >"$HOME/.fuzzycd-history.tmp"
     cp "$HOME/.fuzzycd-history.tmp" "$histfile"
     rm -f "$HOME/.fuzzycd-history.tmp"
     echo "deleted $dir"
@@ -126,7 +126,7 @@ fuzzycd_run() {
       _fzcd_chdir "$@"
     elif _fzcd_is_dirname "$1"; then
       _fzcd_chdir "$1"
-    else    
+    else
       _fzcd_chdir_fzf "$@"
     fi
   }
@@ -135,15 +135,18 @@ fuzzycd_run() {
     [[ -f "$histfile" ]] || _fzcd_create_histfile
 
     case "$1" in
-      "-l" ) FUZZYCD_MODE=i _fzcd_chdir_fzf ;;
-      "-v" ) _fzcd_show_version ;;
-      "-e" ) _fzcd_edit_histfile ;;
-      "-s" ) _fzcd_show_histfile ;;
-      "-d" ) shift ; _fzcd_delete_dir "$@" ;;
-      "-h" ) _fzcd_show_usage ;;
-      *    ) _fzcd_handle_command "$@" ;;
+      "-l") FUZZYCD_MODE=i _fzcd_chdir_fzf ;;
+      "-v") _fzcd_show_version ;;
+      "-e") _fzcd_edit_histfile ;;
+      "-s") _fzcd_show_histfile ;;
+      "-d")
+        shift
+        _fzcd_delete_dir "$@"
+        ;;
+      "-h") _fzcd_show_usage ;;
+      *) _fzcd_handle_command "$@" ;;
     esac
-  }  
+  }
 
   _fzcd_run "$@"
 }
@@ -157,12 +160,12 @@ if [[ -n "$is_sourced" ]]; then
   if [[ -z "$FUZZYCD_TTY_FORCE" ]]; then
     case $- in
       *i*) ;;
-      *) return;;
+      *) return ;;
     esac
   fi
 
-  unalias cd 2> /dev/null || true
+  unalias cd 2>/dev/null || true
   cd() {
-    fuzzycd_run "$@";
+    fuzzycd_run "$@"
   }
 fi
diff --git a/op.conf b/op.conf
index 37ee41b..a2446a3 100644
--- a/op.conf
+++ b/op.conf
@@ -1,2 +1,3 @@
-shellcheck: shellcheck setup fuzzycd
+shellcheck: shellcheck setup fuzzycd && echo PASS
+shfmt: shfmt -d -i 2 -ci setup fuzzycd && echo PASS
 test: test/approve
diff --git a/setup b/setup
index dad69d3..bd772e8 100755
--- a/setup
+++ b/setup
@@ -9,14 +9,14 @@ fuzzy_cd_setup() {
       echo "=== Skipping $file"
     else
       echo "=== Amending $file"
-      printf "source /usr/local/bin/fuzzycd\n" >> "$file"
+      printf "source /usr/local/bin/fuzzycd\n" >>"$file"
     fi
     patched="yes"
   }
 
   download_script() {
     echo "=== Saving fuzzycd to /usr/local/bin"
-    
+
     sudo=''
     if [[ $EUID -ne 0 ]]; then
       sudo='sudo'
@@ -41,7 +41,6 @@ fuzzy_cd_setup() {
       echo "    Add 'source ~/.fuzzy-cd/fuzzy-cd' to your shell's initialization script"
       exit 1
     fi
-
   }
 
   download_script
@@ -49,4 +48,4 @@ fuzzy_cd_setup() {
   show_exit_message
 }
 
-fuzzy_cd_setup
\ No newline at end of file
+fuzzy_cd_setup