diff --git a/.git-blame-ignore-revs b/.git-blame-ignore-revs
index 85b2fc8..8e28bdf 100644
--- a/.git-blame-ignore-revs
+++ b/.git-blame-ignore-revs
@@ -12,3 +12,6 @@ aae99098fae4a59fed75ecb5e71db3af96de4a07
 
 # Scala Steward: Reformat with scalafmt 3.9.7
 535f319d144ddfaf77dcd73a0d5be472803a3933
+
+# Scala Steward: Reformat with scalafmt 3.9.9
+4094db7c730bc978a6e4875aa0916dcc6e9ecc88
diff --git a/.scalafmt.conf b/.scalafmt.conf
index e70cb7b..0da3700 100644
--- a/.scalafmt.conf
+++ b/.scalafmt.conf
@@ -1,7 +1,7 @@
 # initial version taken over from alpakka
 # https://akka.io/blog/2019/09/09/akka-family-builds
 
-version = 3.9.8
+version = 3.9.9
 runner.dialect = "scala213"
 style = defaultWithAlign
 
diff --git a/build.sbt b/build.sbt
index 4addcfc..cf9bd50 100644
--- a/build.sbt
+++ b/build.sbt
@@ -57,13 +57,13 @@ lazy val root = (project in file("."))
       "org.playframework" %% "play-json"               % playJsonVersion,
       "com.typesafe.play" %% "play-ws-standalone"      % playWsVersion,
       "com.typesafe.play" %% "play-ws-standalone-json" % playWsVersion,
-      "org.slf4j" % "slf4j-api"      % slf4jVersion,
-      "org.slf4j" % "jcl-over-slf4j" % slf4jVersion,
+      "org.slf4j"          % "slf4j-api"               % slf4jVersion,
+      "org.slf4j"          % "jcl-over-slf4j"          % slf4jVersion,
       // TEST
-      "ch.qos.logback" % "logback-classic" % logbackVersion % TestAndIntegrationTest,
-      "org.specs2"    %% "specs2-core"     % specs2Version  % TestAndIntegrationTest,
-      "org.specs2"    %% "specs2-junit"    % specs2Version  % TestAndIntegrationTest,
-      "com.typesafe.play" %% "play-ahc-ws-standalone" % playWsVersion % TestAndIntegrationTest,
+      "ch.qos.logback"     % "logback-classic"        % logbackVersion % TestAndIntegrationTest,
+      "org.specs2"        %% "specs2-core"            % specs2Version  % TestAndIntegrationTest,
+      "org.specs2"        %% "specs2-junit"           % specs2Version  % TestAndIntegrationTest,
+      "com.typesafe.play" %% "play-ahc-ws-standalone" % playWsVersion  % TestAndIntegrationTest,
       "com.whisk" %% "docker-testkit-core" % dockerTestkitVersion % TestAndIntegrationTest excludeAll (nettyExclusions: _*)
     ).map(_.excludeAll(libraryExclusions: _*))
   )