diff --git a/project/build.properties b/project/build.properties
index 04267b14..27430827 100644
--- a/project/build.properties
+++ b/project/build.properties
@@ -1 +1 @@
-sbt.version=1.9.9
+sbt.version=1.9.6
diff --git a/project/plugins.sbt b/project/plugins.sbt
index d2ca5354..ea82f352 100644
--- a/project/plugins.sbt
+++ b/project/plugins.sbt
@@ -1,7 +1,7 @@
 resolvers += Classpaths.sbtPluginReleases
 resolvers += "Typesafe Repository" at "https://repo.typesafe.com/typesafe/releases/"
 
-addSbtPlugin("com.github.sbt"    % "sbt-ci-release"  % "1.5.12")
+addSbtPlugin("com.github.sbt"    % "sbt-ci-release"  % "1.5.10")
 addSbtPlugin("de.heikoseeberger" % "sbt-header"      % "5.10.0")
 addSbtPlugin("com.47deg"         % "sbt-microsites"  % "1.4.4")
 addSbtPlugin("org.scalameta"     % "sbt-mdoc"        % "2.5.2")