diff --git a/scripts/update_lang_functions.sh b/scripts/update_lang_functions.sh
index a2605115e..4c5f4a183 100755
--- a/scripts/update_lang_functions.sh
+++ b/scripts/update_lang_functions.sh
@@ -94,8 +94,12 @@ function load_langpacks {
         pushd "$LANGPACKS_PATH"
 
         git checkout "langpack_$LANGVERSION"
-        git pull
+        if [ $? -ne 0 ]; then
+            echo "Cannot checkout language repository langpack_$LANGVERSION"
+            exit 1
+        fi
 
+        git pull
         if [ $? -ne 0 ]; then
             echo "Cannot update language repository"
             exit 1
diff --git a/src/core/classes/sites/authenticated-site.ts b/src/core/classes/sites/authenticated-site.ts
index f396bbd77..a50f3a140 100644
--- a/src/core/classes/sites/authenticated-site.ts
+++ b/src/core/classes/sites/authenticated-site.ts
@@ -73,6 +73,7 @@ export class CoreAuthenticatedSite extends CoreUnauthenticatedSite {
         '4.2': 2023042400,
         '4.3': 2023100900,
         '4.4': 2024042200,
+        '4.5': 2024081600, // @TODO correct the final release date.
     };
 
     // Possible cache update frequencies.