diff --git a/build.sbt b/build.sbt
index 061c959..b83408a 100644
--- a/build.sbt
+++ b/build.sbt
@@ -12,10 +12,10 @@ scmInfo := Some(ScmInfo(url("https://github.com/inoio/solrs"), "git@github.com:i
 
 licenses := Seq("Apache-2.0" -> url("http://www.apache.org/licenses/LICENSE-2.0.html"))
 
-scalaVersion := "3.3.3"
+scalaVersion := "3.4.1"
 
 // Remember: also update scala versions in .travis.yml!
-crossScalaVersions := Seq("2.12.19", "2.13.13", "3.3.3")
+crossScalaVersions := Seq("2.12.19", "2.13.13", "3.4.1")
 
 scalacOptions ++= Seq(
   "-unchecked",
@@ -41,12 +41,12 @@ resolvers ++= Seq(
 )
 
 val solrVersion = "9.4.1"
-val slf4jVersion = "2.0.12"
+val slf4jVersion = "2.0.13"
 
 libraryDependencies ++= Seq(
   "org.apache.solr"         % "solr-solrj"        % solrVersion,
   "org.asynchttpclient"     % "async-http-client" % "2.12.3",
-  "org.scala-lang.modules" %% "scala-xml"         % "2.2.0",
+  "org.scala-lang.modules" %% "scala-xml"         % "2.3.0",
   "org.scala-lang.modules" %% "scala-java8-compat"% "1.0.2",
   "io.dropwizard.metrics"   % "metrics-core"      % "4.2.25" % "optional",
   "org.slf4j"               % "slf4j-api"         % slf4jVersion,
@@ -58,7 +58,7 @@ libraryDependencies ++= Seq(
   "org.hamcrest"            % "hamcrest-library"  % "2.2" % "test",
   "dev.zio"                %% "izumi-reflect"     % "2.3.8" % Test,
   "org.apache.solr"         % "solr-test-framework" % solrVersion % "test" excludeAll(ExclusionRule(organization = "org.apache.logging.log4j")),
-  "com.twitter"            %% "util-core"         % "23.11.0" % "optional"
+  "com.twitter"            %% "util-core"         % "24.2.0" % "optional"
 )
 
 excludeDependencies ++= (
diff --git a/project/build.properties b/project/build.properties
index 04267b1..081fdbb 100644
--- a/project/build.properties
+++ b/project/build.properties
@@ -1 +1 @@
-sbt.version=1.9.9
+sbt.version=1.10.0
diff --git a/project/plugins.sbt b/project/plugins.sbt
index abc668a..3074a2b 100644
--- a/project/plugins.sbt
+++ b/project/plugins.sbt
@@ -3,10 +3,10 @@ ThisBuild / libraryDependencySchemes ++= Seq(
 )
 
 addSbtPlugin("org.scoverage" % "sbt-scoverage" % "2.0.12")
-addSbtPlugin("com.github.sbt" % "sbt-site-paradox" % "1.5.0")
+addSbtPlugin("com.github.sbt" % "sbt-site-paradox" % "1.7.0")
 addSbtPlugin("com.github.sbt" % "sbt-ghpages" % "0.8.0")
 // use a newer version of paradox (site would pull in automatically an older version)
-addSbtPlugin("com.lightbend.paradox" % "sbt-paradox" % "0.10.6")
+addSbtPlugin("com.lightbend.paradox" % "sbt-paradox" % "0.10.7")
 addSbtPlugin("ch.epfl.scala" % "sbt-scalafix" % "0.12.0")
 // addSbtPlugin("io.github.jonas" % "sbt-paradox-material-theme" % "0.4.0")
 addDependencyTreePlugin