diff --git a/.git-blame-ignore-revs b/.git-blame-ignore-revs
index bdbe9d36..d3555544 100644
--- a/.git-blame-ignore-revs
+++ b/.git-blame-ignore-revs
@@ -7,3 +7,6 @@
 
 # Scala Steward: Reformat with scalafmt 3.8.5
 6c5f5c6d874d7c9e15bfc78f3c847829297fb8ae
+
+# Scala Steward: Reformat with scalafmt 3.9.7
+7da827d0350f9f416a0114baab99f4e526c7382a
diff --git a/.scalafmt.conf b/.scalafmt.conf
index 99f74dc4..fb438cbd 100644
--- a/.scalafmt.conf
+++ b/.scalafmt.conf
@@ -1,4 +1,4 @@
-version = "3.9.4"
+version = "3.9.7"
 project.git = true
 runner.dialect = "scala213"
 assumeStandardLibraryStripMargin = true
diff --git a/domain/src/main/scala/scoverage/domain/CodeGrid.scala b/domain/src/main/scala/scoverage/domain/CodeGrid.scala
index 70b33f96..185d95ae 100644
--- a/domain/src/main/scala/scoverage/domain/CodeGrid.scala
+++ b/domain/src/main/scala/scoverage/domain/CodeGrid.scala
@@ -34,7 +34,7 @@ class CodeGrid(mFile: MeasuredFile, sourceEncoding: Option[String]) {
         // in that block were executed
         cells(k).status match {
           case Invoked => if (!stmt.isInvoked) cells(k).status = NotInvoked
-          case NoData =>
+          case NoData  =>
             if (!stmt.isInvoked) cells(k).status = NotInvoked
             else if (stmt.isInvoked) cells(k).status = Invoked
           case NotInvoked =>
diff --git a/plugin/src/main/scala/scoverage/CoverageFilter.scala b/plugin/src/main/scala/scoverage/CoverageFilter.scala
index 4d95bb01..7fa7b680 100644
--- a/plugin/src/main/scala/scoverage/CoverageFilter.scala
+++ b/plugin/src/main/scala/scoverage/CoverageFilter.scala
@@ -105,7 +105,7 @@ class RegexCoverageFilter(
   def getExcludedLineNumbers(sourceFile: SourceFile): List[Range] = {
     linesExcludedByScoverageCommentsCache.get(sourceFile) match {
       case Some(lineNumbers) => lineNumbers
-      case None =>
+      case None              =>
         val lineNumbers = compatFindAllIn(
           scoverageExclusionCommentsRegex,
           sourceFile.content
diff --git a/plugin/src/main/scala/scoverage/ScoverageOptions.scala b/plugin/src/main/scala/scoverage/ScoverageOptions.scala
index 6519c3a2..f0c040b6 100644
--- a/plugin/src/main/scala/scoverage/ScoverageOptions.scala
+++ b/plugin/src/main/scala/scoverage/ScoverageOptions.scala
@@ -105,7 +105,7 @@ object ScoverageOptions {
       // we just ignore them here
       case ExtraAfterPhase(afterPhase)   => ()
       case ExtraBeforePhase(beforePhase) => ()
-      case "reportTestName" =>
+      case "reportTestName"              =>
         options = options.copy(reportTestName = true)
       case opt => errFn("Unknown option: " + opt)
     }
diff --git a/plugin/src/main/scala/scoverage/ScoveragePlugin.scala b/plugin/src/main/scala/scoverage/ScoveragePlugin.scala
index 6a144e9c..ca3064f1 100644
--- a/plugin/src/main/scala/scoverage/ScoveragePlugin.scala
+++ b/plugin/src/main/scala/scoverage/ScoveragePlugin.scala
@@ -366,7 +366,7 @@ class ScoverageInstrumentationComponent(
     def updateLocation(t: Tree): Unit = {
       Location.fromGlobal(global)(t) match {
         case Some(loc) => this.location = loc
-        case _ =>
+        case _         =>
           reporter.warning(t.pos, s"Cannot update location for $t")
       }
     }
diff --git a/reporter/src/main/scala/scoverage/reporter/BaseReportWriter.scala b/reporter/src/main/scala/scoverage/reporter/BaseReportWriter.scala
index 6c89b2e4..5e523afd 100644
--- a/reporter/src/main/scala/scoverage/reporter/BaseReportWriter.scala
+++ b/reporter/src/main/scala/scoverage/reporter/BaseReportWriter.scala
@@ -29,7 +29,7 @@ class BaseReportWriter(
       sourcePaths.find(sourcePath => canonicalSrc.startsWith(sourcePath))
     sourceRoot match {
       case Some(path: String) => canonicalSrc.replace(path, "")
-      case _ =>
+      case _                  =>
         val fmtSourcePaths: String = sourcePaths.mkString("'", "', '", "'")
         throw new RuntimeException(
           s"No source root found for '$canonicalSrc' (source roots: $fmtSourcePaths)"