diff --git a/README.md b/README.md
index e0ad5d5..ca6a0d8 100644
--- a/README.md
+++ b/README.md
@@ -50,7 +50,7 @@ See also [upstream wiki Authentication page](https://docs.mau.fi/bridges/python/
 * see https://docs.mau.fi/bridges/python/telegram/relay-bot.html
 
 
-**Shipped version:** 0.11.3~ynh1
+**Shipped version:** 0.11.3~ynh2
 
 ## Disclaimers / important information
 
diff --git a/README_fr.md b/README_fr.md
index 351e1c4..19decaf 100644
--- a/README_fr.md
+++ b/README_fr.md
@@ -50,7 +50,7 @@ See also [upstream wiki Authentication page](https://docs.mau.fi/bridges/python/
 * see https://docs.mau.fi/bridges/python/telegram/relay-bot.html
 
 
-**Version incluse :** 0.11.3~ynh1
+**Version incluse :** 0.11.3~ynh2
 
 ## Avertissements / informations importantes
 
diff --git a/conf/config.yaml b/conf/config.yaml
index a25d383..d8af4c6 100644
--- a/conf/config.yaml
+++ b/conf/config.yaml
@@ -237,10 +237,10 @@ bridge:
     # See https://docs.mau.fi/bridges/general/end-to-bridge-encryption.html for more info.
     encryption:
         # Allow encryption, work in group chat rooms with e2ee enabled
-        allow: false
+        allow: __IS_ENCRYPTION_ENABLED__
         # Default to encryption, force-enable encryption in all portals the bridge creates
         # This will cause the bridge bot to be in private chats for the encryption to work properly.
-        default: false
+        default: __IS_ENCRYPTION_ENABLED__
         # Database for the encryption data. If set to `default`, will use the appservice database.
         database: default
         # Options for automatic key sharing.
diff --git a/manifest.json b/manifest.json
index 4b3c417..b70bde8 100644
--- a/manifest.json
+++ b/manifest.json
@@ -6,7 +6,7 @@
         "en": "Telegram puppeting bridge for Matrix/Synapse",
         "fr": "Passerelle Telegram pour Matrix/Synapse"
     },
-    "version": "0.11.3~ynh1",
+    "version": "0.11.3~ynh2",
     "url": "https://docs.mau.fi/bridges/python/telegram/index.html",
     "upstream": {
         "license": "AGPL-3.0-or-later",
@@ -64,8 +64,8 @@
                     "fr": "Activer le chiffrement entre Synapse et le bridge ?"
                 },
                 "help": {
-                    "en": "Only activate if you know the prerequisites and constraints related to e2b.",
-                    "fr": "N'activer que si vous connaissez les prérequis et constraintes liées à e2b."
+                    "en": "Only activate if you know the prerequisites and constraints related to e2b. See more: https://docs.mau.fi/bridges/general/end-to-bridge-encryption.html",
+                    "fr": "N'activer que si vous connaissez les prérequis et constraintes liées à e2b. Voir aussi : https://docs.mau.fi/bridges/general/end-to-bridge-encryption.html"
                 },
                 "default": false
             },
diff --git a/scripts/_common.sh b/scripts/_common.sh
index 1254db4..8296088 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -7,6 +7,7 @@
 # dependencies used by the app
 # HACK zlib1g-dev libjpeg-dev (libwebp-dev optional but necessary for stickers) are necessary to compile / install pillow
 pkg_dependencies="postgresql python3 zlib1g-dev libjpeg-dev libwebp-dev python3-venv libpq-dev libffi-dev"
+pkg_dependencies_e2be="libolm-dev"
 
 #=================================================
 # PERSONAL HELPERS
diff --git a/scripts/install b/scripts/install
index d91b3be..0362dc4 100755
--- a/scripts/install
+++ b/scripts/install
@@ -107,6 +107,11 @@ ynh_app_setting_set --app=$app --key=port --value=$port
 #=================================================
 ynh_script_progression --message="Installing dependencies..." --weight=97
 
+if [ $encryption -eq 1 ]; then
+    # Install libolm-dev to be able to use encryption
+    ynh_install_extra_app_dependencies  $pkg_dependencies_e2be
+fi
+
 ynh_exec_warn_less ynh_install_app_dependencies $pkg_dependencies
 
 #=================================================
@@ -159,6 +164,12 @@ ynh_script_progression --message="Configuring Mautrix-Bridge..." --weight=2
 mautrix_config_path="$final_path/config.yaml"
 as_token="\"This value is generated when generating the registration\""
 hs_token="\"This value is generated when generating the registration\""
+is_encryption_enabled=$encryption
+
+if [ $encryption -eq 1 ]; then
+  is_encryption_enabled=true
+fi
+
 write_bridge_config
 
 #=================================================
@@ -171,6 +182,11 @@ python3 -m venv $final_path
 export HOME=$final_path # HACK see https://github.com/mautrix/telegram/issues/661
 $final_path/bin/pip3 install --upgrade pip setuptools wheel
 $final_path/bin/pip3 install --upgrade $final_path/src/mautrix-telegram.tar.gz[speedups,qr_login] # metrics,e2be,hq_thumbnails,sqlite,formattednumbers
+
+if [ $encryption -eq 1 ]; then
+  $final_path/bin/pip3 install --upgrade $final_path/src/mautrix-telegram.tar.gz[e2be]
+fi
+
 # -r optional-requirements.txt
 $final_path/bin/python3 -m mautrix_telegram -g -c "$mautrix_config_path" -r "$app_service_registration_path/$app.yaml"
 
diff --git a/scripts/upgrade b/scripts/upgrade
index 1cdc4c9..170d407 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -97,6 +97,11 @@ fi
 #=================================================
 ynh_script_progression --message="Upgrading dependencies..." --weight=1
 
+if [ $encryption -eq 1 ]; then
+    # Install libolm-dev to be able to use encryption
+    ynh_install_extra_app_dependencies  $pkg_dependencies_e2be
+fi
+
 ynh_exec_warn_less ynh_install_app_dependencies $pkg_dependencies
 
 #=================================================
@@ -111,6 +116,10 @@ if [ "$upgrade_type" == "UPGRADE_APP" ]; then
   export HOME=$final_path
   $final_path/bin/pip3 install --upgrade pip setuptools wheel
   $final_path/bin/pip3 install --upgrade $final_path/src/mautrix-telegram.tar.gz[speedups,qr_login] # metrics,e2be,hq_thumbnails,sqlite,formattednumbers
+
+  if [ $encryption -eq 1 ]; then
+    $final_path/bin/pip3 install --upgrade $final_path/src/mautrix-telegram.tar.gz[e2be]
+  fi
 fi
 
 #=================================================
@@ -126,6 +135,12 @@ as_token=$(grep "as_token:" "$mautrix_config_path" | sed -r "s/ *as_token: *//")
 hs_token=$(grep "hs_token:" "$mautrix_config_path" | sed -r "s/ *hs_token: *//")
 # ynh_replace_string --match_string=__AS_TOKEN__ --replace_string="$as_token" --target_file="$mautrix_config_path"
 # ynh_replace_string --match_string=__HS_TOKEN__ --replace_string="$hs_token" --target_file="$mautrix_config_path"
+is_encryption_enabled=$encryption
+
+if [ $encryption -eq 1 ]; then
+  is_encryption_enabled=true
+fi
+
 write_bridge_config
 
 # upgrade the app-service-registration