diff --git a/prepdb.sh b/prepdb.sh
index 01a2522..943fb84 100644
--- a/prepdb.sh
+++ b/prepdb.sh
@@ -16,6 +16,10 @@ replace_in_sqlite_db() {
     local BACKUP_PATH="${DB_PATH}.bak"
     cp "$DB_PATH" "$BACKUP_PATH"
 
+    # Escape single quotes for SQL
+    local OLD_STRING_ESC=$(printf '%s\n' "$OLD_STRING" | sed "s/'/''/g")
+    local NEW_STRING_ESC=$(printf '%s\n' "$NEW_STRING" | sed "s/'/''/g")
+
     # Begin a transaction
     sqlite3 "$DB_PATH" "BEGIN TRANSACTION;"
 
@@ -27,41 +31,21 @@ replace_in_sqlite_db() {
     for TABLE in $TABLES; do
         echo "Processing table: $TABLE"
 
-        # Get a list of all columns in the table
-        sqlite3 "$DB_PATH" "PRAGMA table_info($TABLE);" | awk -F'|' '{print $2","$3}' | while IFS=, read -r COLUMN COLUMN_TYPE; do
-            # Skip empty lines
-            if [ -z "$COLUMN" ]; then
-                continue
-            fi
+        # Get a list of all non-BLOB columns in the table
+        sqlite3 "$DB_PATH" "PRAGMA table_info($TABLE);" | awk -F'|' '
+        {
+            if ($3 != "BLOB") {
+                print $2
+            }
+        }' | while read -r COLUMN; do
+            if [ -n "$COLUMN" ]; then
+                echo "  Processing column: $COLUMN"
 
-            echo "  Processing column: $COLUMN (type: $COLUMN_TYPE)"
-
-            # Skip BLOB columns to avoid corruption
-            if [[ "$COLUMN_TYPE" == "BLOB" ]]; then
-                echo "    Skipping BLOB column: $COLUMN"
-                continue
-            fi
-
-            # Check if the column might contain JSON data
-            local IS_JSON=$(sqlite3 "$DB_PATH" "SELECT COUNT(*) FROM $TABLE WHERE json_valid($COLUMN) = 1 LIMIT 1;")
-
-            if [ "$IS_JSON" -gt 0 ]; then
-                echo "    Detected JSON data in column $COLUMN. Using json_replace()."
-
-                # Use json_replace for JSON columns
+                # Update only rows where the column contains OLD_STRING
                 sqlite3 "$DB_PATH" "
                 UPDATE $TABLE
-                SET $COLUMN = json_replace($COLUMN, '$OLD_STRING', '$NEW_STRING')
-                WHERE json_valid($COLUMN) = 1 AND json_type($COLUMN) IS NOT NULL;
-                "
-            else
-                echo "    Column $COLUMN is not JSON. Using replace()."
-
-                # Use replace for non-JSON columns
-                sqlite3 "$DB_PATH" "
-                UPDATE $TABLE
-                SET $COLUMN = replace($COLUMN, '$OLD_STRING', '$NEW_STRING')
-                WHERE $COLUMN LIKE '%$OLD_STRING%';
+                SET $COLUMN = replace(CAST($COLUMN AS TEXT), '$OLD_STRING_ESC', '$NEW_STRING_ESC')
+                WHERE CAST($COLUMN AS TEXT) LIKE '%$OLD_STRING_ESC%';
                 "
             fi
         done