diff --git a/README.md b/README.md
index 57dc974..3a2a421 100644
--- a/README.md
+++ b/README.md
@@ -19,7 +19,7 @@ If you don't have YunoHost, please consult [the guide](https://yunohost.org/#/in
 A simple, intuitive web app for analysing and decoding data without having to deal with complex tools or programming languages. CyberChef encourages both technical and non-technical people to explore data formats, encryption and compression: encode, decode, format data, parse data, encrypt, decrypt, compress data, extract data, perform arithmetic functions against data, etc.. There are around 300 operations in CyberChef allowing you to carry out simple and complex tasks easily.
 
 
-**Shipped version:** 10.8.1~ynh2
+**Shipped version:** 10.8.1~ynh3
 
 **Demo:** https://gchq.github.io/CyberChef
 
diff --git a/README_fr.md b/README_fr.md
index 398e964..73bf007 100644
--- a/README_fr.md
+++ b/README_fr.md
@@ -19,7 +19,7 @@ Si vous n’avez pas YunoHost, regardez [ici](https://yunohost.org/#/install) po
 Une application web simple et intuitive pour analyser et décoder des données sans avoir affaire à des outils ou des langages de programmation compliqués. CyberChef s'adresse aussi bien aux utilisateurs expérimentés qu'aux plus novices souhaitant explorer les formats de données, leur chiffrement et leur compression: encoder, décoder, formater, analyser, chiffrer, déchiffrer, compresser, extraire, fonctions arithmétiques, etc.. Il y a en tout près de 300 outils dans CyberChef permettant de réaliser facilement des tâches simples ou complexes.
 
 
-**Version incluse :** 10.8.1~ynh2
+**Version incluse :** 10.8.1~ynh3
 
 **Démo :** https://gchq.github.io/CyberChef
 
diff --git a/manifest.toml b/manifest.toml
index 64018da..c90a329 100644
--- a/manifest.toml
+++ b/manifest.toml
@@ -4,7 +4,7 @@ id = "cyberchef"
 name = "CyberChef"
 description.en = "Cyber Swiss Army Knife - toolbox for data analysis"
 description.fr = "Cyber-couteau suisse - boîte à outils pour l'analyse de données"
-version = "10.8.1~ynh2"
+version = "10.8.1~ynh3"
 
 maintainers = ["oleole39"]
 
diff --git a/scripts/change_url b/scripts/change_url
index 81e6351..7df80c9 100644
--- a/scripts/change_url
+++ b/scripts/change_url
@@ -10,7 +10,7 @@ source _common.sh
 source /usr/share/yunohost/helpers
 
 upstream_source_url=$(ynh_read_manifest --manifest_key="resources.sources.main.url")
-source_filename=$(basename $upstream_source_url)
+filename_sourcefile=$(basename $upstream_source_url)
 index_page=$(basename -s .zip $upstream_source_url).html #this variable will also populate the template tag __INDEX_PAGE__ in nginx.conf
 
 #=================================================
diff --git a/scripts/install b/scripts/install
index bf79d6d..1053fd7 100755
--- a/scripts/install
+++ b/scripts/install
@@ -10,7 +10,7 @@ source _common.sh
 source /usr/share/yunohost/helpers
 
 upstream_source_url=$(ynh_read_manifest --manifest_key="resources.sources.main.url")
-source_filename=$(basename $upstream_source_url)
+filename_sourcefile=$(basename $upstream_source_url)
 index_page=$(basename -s .zip $upstream_source_url).html #this variable will also populate the template tag __INDEX_PAGE__ in nginx.conf
 
 #=================================================
@@ -21,7 +21,7 @@ index_page=$(basename -s .zip $upstream_source_url).html #this variable will als
 ynh_script_progression --message="Setting up source files..." --weight=10
 
 ynh_setup_source --dest_dir="$install_dir"
-sed -i "s|$source_filename|$upstream_source_url|g" "$install_dir/$index_page" #replace local link to source file with upstream source file's link 
+ynh_replace_string --match_string="$filename_sourcefile" --replace_string="$upstream_source_url" --target_file="$install_dir/$index_page" #replace link to local source file with link to upstream source file 
 chown -R $app:www-data "$install_dir"
 
 #=================================================
diff --git a/scripts/upgrade b/scripts/upgrade
index a3931ea..34207b8 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -12,7 +12,7 @@ source /usr/share/yunohost/helpers
 upgrade_type=$(ynh_check_app_version_changed)
 
 upstream_source_url=$(ynh_read_manifest --manifest_key="resources.sources.main.url")
-source_filename=$(basename $upstream_source_url)
+filename_sourcefile=$(basename $upstream_source_url)
 index_page=$(basename -s .zip $upstream_source_url).html #this variable will also populate the template tag __INDEX_PAGE__ in nginx.conf
 
 #=================================================
@@ -25,7 +25,7 @@ if [ "$upgrade_type" == "UPGRADE_APP" ]
 then
 	ynh_script_progression --message="Upgrading source files..." --weight=10
 	ynh_setup_source --dest_dir="$install_dir"
-	sed -i "s|$source_filename|$upstream_source_url|g" "$install_dir/$index_page" #replace local link to source file with upstream source file's link 
+	ynh_replace_string --match_string="$filename_sourcefile" --replace_string="$upstream_source_url" --target_file="$install_dir/$index_page" #replace link to local source file with link to upstream source file 
 	chown -R $app:www-data "$install_dir"
 fi