diff --git a/.github/workflows/compile.yml b/.github/workflows/compile.yml
index 9b950dc..5c1f781 100644
--- a/.github/workflows/compile.yml
+++ b/.github/workflows/compile.yml
@@ -4,7 +4,7 @@ on:
   push:
     branches:
       - main
-    paths: ["src/**", .github/workflows/**]
+    paths: ["src/**", .github/workflows/**, ./compile.sh]
 
 jobs:
   compile:
diff --git a/compile.sh b/compile.sh
index e1f9cb8..f19805b 100644
--- a/compile.sh
+++ b/compile.sh
@@ -11,7 +11,7 @@ if [ $# -eq 0 ]; then
 	exit -1
 fi
 
-shopt -s globstar
+shopt -s globstar extglob
 
 out_dir=`realpath $1`
 old_out_dir=`realpath $2`
@@ -28,12 +28,18 @@ getDirLastHash () {
     echo `awk -F"," "\\$1 == \"$path\" { print \\$2 } " $hash_file`
 }
 
-updateHashes() {
+# $1: path of the directory
+getDirCurrHash () {
+    path="$1"
+    echo `git log -n 1 --format='%h' $path/**/*.!(cls)`
+}
+
+updateHashes () {
     cd $work_dir
     echo "ainotes.cls,`git log -n 1 --format='%h' ./ainotes.cls`" > $new_hash_file
     for f in **/[!_]*.tex; do
         f_dir=$(dirname $f)
-        echo "$f_dir,`git log -n 1 --format='%h' $f_dir`" >> $new_hash_file
+        echo "$f_dir,`getDirCurrHash $f_dir`" >> $new_hash_file
     done
 }
 
@@ -48,7 +54,7 @@ for f in **/[!_]*.tex; do
     f_base=$(basename $f)
     f_nameonly="${f_base%.*}"
     old_hash=`getDirLastHash "$f_dir"`
-    curr_hash="$(git log -n 1 --format='%h' $f_dir)"
+    curr_hash=`getDirCurrHash "$f_dir"`
 
     mkdir -p $out_dir/$f_dir
 
@@ -62,7 +68,7 @@ for f in **/[!_]*.tex; do
     cd ${f_dir};
 
     # Insert last update date
-    last_update=$(LC_ALL="en_GB.UTF-8" git log -1 --pretty="format:%ad" --date="format:%d %B %Y" .)
+    last_update=`LC_ALL="en_GB.UTF-8" git log -1 --pretty="format:%ad" --date="format:%d %B %Y" ./**/*.!(cls)`
     cp --remove-destination $(readlink ainotes.cls) ainotes.cls
     sed -i "s/PLACEHOLDER-LAST-UPDATE/${last_update}/" ainotes.cls