diff --git a/resources/com/cadoles/common/add-letsencrypt-ca.sh b/resources/com/cadoles/common/add-letsencrypt-ca.sh
old mode 100644
new mode 100755
index efda172..b71fb54
--- a/resources/com/cadoles/common/add-letsencrypt-ca.sh
+++ b/resources/com/cadoles/common/add-letsencrypt-ca.sh
@@ -2,10 +2,18 @@
 
 set -eo pipefail
 
-DESTDIR=/usr/local/share/ca-certificates
-if [ ! -d "$DESTDIR" ]; then
-	DESTDIR=/etc/ca-certificates/trust-source/anchors
-fi
+declare -a DESTDIR_PATHS=(
+    "/usr/local/share/ca-certificates" 
+    "/etc/ca-certificates/trust-source/anchors" 
+    "/etc/pki/ca-trust/source/anchors"
+)
+
+for path in "${DESTDIR_PATHS[@]}"; do
+    if [ -d "$path" ]; then
+        DESTDIR=$path
+        break
+    fi
+done
 
 UPDATE_CERTS_CMD=update-ca-certificates
 if [ -z "$(which $UPDATE_CERTS_CMD)" ]; then