diff --git a/.scalafmt.conf b/.scalafmt.conf
index f77a401..bf2c140 100644
--- a/.scalafmt.conf
+++ b/.scalafmt.conf
@@ -1,3 +1,3 @@
-version="3.5.0" 
+version="3.5.1" 
 maxColumn = 120
 runner.dialect = scala3
diff --git a/src/main/scala/lc/background/taskThread.scala b/src/main/scala/lc/background/taskThread.scala
index 6477207..3a0f114 100644
--- a/src/main/scala/lc/background/taskThread.scala
+++ b/src/main/scala/lc/background/taskThread.scala
@@ -46,7 +46,7 @@ class BackgroundTask(config: Config, captchaManager: CaptchaManager) {
       (captcha.allowedLevels).flatMap { level =>
         (captcha.allowedMedia).flatMap { media =>
           (captcha.allowedInputType).flatMap { inputType =>
-            (captcha.allowedSizes).map {size =>
+            (captcha.allowedSizes).map { size =>
               Parameters(level, media, inputType, size)
             }
           }
diff --git a/src/main/scala/lc/captchas/FilterChallenge.scala b/src/main/scala/lc/captchas/FilterChallenge.scala
index 2944cb1..e657c1b 100644
--- a/src/main/scala/lc/captchas/FilterChallenge.scala
+++ b/src/main/scala/lc/captchas/FilterChallenge.scala
@@ -43,16 +43,16 @@ class FilterChallenge extends ChallengeProvider {
     val height = size2D(1)
     val canvas = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB)
     val g = canvas.createGraphics()
-    val fontHeight = (height*0.6).toInt
+    val fontHeight = (height * 0.6).toInt
     g.setColor(Color.WHITE)
     g.fillRect(0, 0, canvas.getWidth, canvas.getHeight)
     g.setColor(Color.BLACK)
     val font = new Font("Serif", Font.BOLD, fontHeight)
     g.setFont(font)
     val stringWidth = g.getFontMetrics().stringWidth(secret)
-    val scaleX = if (stringWidth > width) width/(stringWidth.toDouble) else 1d
+    val scaleX = if (stringWidth > width) width / (stringWidth.toDouble) else 1d
     val margin = if (stringWidth > width) 0 else (width - stringWidth)
-    val xOffset = (margin*r.nextDouble).toInt
+    val xOffset = (margin * r.nextDouble).toInt
     g.scale(scaleX, 1d)
     g.drawString(secret, xOffset, fontHeight)
     g.dispose()
diff --git a/src/main/scala/lc/captchas/RainDropsCaptcha.scala b/src/main/scala/lc/captchas/RainDropsCaptcha.scala
index 40cd217..8611004 100644
--- a/src/main/scala/lc/captchas/RainDropsCaptcha.scala
+++ b/src/main/scala/lc/captchas/RainDropsCaptcha.scala
@@ -128,13 +128,13 @@ class RainDropsCP extends ChallengeProvider {
       val textX = if (textWidth > width) 0 else ((width - textWidth) / 2)
 
       // this will be overlapped by the following text to show the top outline because of the offset
-      val yOffset = (fontHeight*0.01).ceil.toInt
+      val yOffset = (fontHeight * 0.01).ceil.toInt
       g.setColor(textHighlightColor)
-      g.drawString(secret, textX, (fontHeight*1.1).toInt - yOffset)
+      g.drawString(secret, textX, (fontHeight * 1.1).toInt - yOffset)
 
       // paint the text
       g.setColor(textColor)
-      g.drawString(secret, textX, (fontHeight*1.1).toInt)
+      g.drawString(secret, textX, (fontHeight * 1.1).toInt)
 
       g.dispose()
       writer.writeToSequence(canvas)