diff --git a/.github/workflows/fullTest.yml b/.github/workflows/fullTest.yml
index 80ecb09..d830183 100644
--- a/.github/workflows/fullTest.yml
+++ b/.github/workflows/fullTest.yml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        java: [ 11, 17, 19 ]
+        java: [ 11, 17, 21 ]
     steps:
       - uses: actions/checkout@v2
       - name: Set up JDK ${{ matrix.java }}
diff --git a/README.md b/README.md
index 402a40f..b6aaac2 100644
--- a/README.md
+++ b/README.md
@@ -43,9 +43,10 @@ To use this serializer, you need to do two things:
 
 We provide several versions of the library:
 
-Version | Akka & Kryo Compatibility | Available Scala Versions | Tested with                                                                 |
---------|---------------------------|--------------------------|-----------------------------------------------------------------------------|
-v1.0.x  | Pekko-1.0 and Kryo-5.4    | 2.12,2.13,3.1            | JDK: OpenJdk11,OpenJdk17           Scala: 2.12.17,2.13.10,3.1.3 Pekko: 1.0.1 |
+Version | Akka & Kryo Compatibility | Available Scala Versions | Tested with                                                                  |
+--------|---------------------------|--------------------------|------------------------------------------------------------------------------|
+v1.1.x  | Pekko-1.0 and Kryo-5.5    | 2.12,2.13,3.1            | JDK: OpenJdk11,OpenJdk17,OpenJdk21 Scala: 2.12.17,2.13.10,3.3.1 Pekko: 1.0.1 |
+v1.0.x  | Pekko-1.0 and Kryo-5.4    | 2.12,2.13,3.1            | JDK: OpenJdk11,OpenJdk17           Scala: 2.12.17,2.13.10,3.3.1 Pekko: 1.0.1 |
 
 
 Note that we use semantic versioning - see [semver.org](https://semver.org/).
@@ -56,7 +57,7 @@ Note that we use semantic versioning - see [semver.org](https://semver.org/).
 To use the latest stable release of pekko-kryo-serialization in sbt projects you just need to add
 this dependency:
 
-`libraryDependencies += "io.altoo" %% "pekko-kryo-serialization" % "1.0.0"`
+`libraryDependencies += "io.altoo" %% "pekko-kryo-serialization" % "1.1.0"`
 
 #### maven projects
 
@@ -75,7 +76,7 @@ To use the official release of pekko-kryo-serialization in Maven projects, pleas
     <dependency>
         <groupId>io.altoo</groupId>
         <artifactId>pekko-kryo-serialization_2.13</artifactId>
-        <version>1.0.0</version>
+        <version>1.1.0</version>
     </dependency>
 ```
 
diff --git a/build.sbt b/build.sbt
index 7579ff7..d6569fc 100644
--- a/build.sbt
+++ b/build.sbt
@@ -7,7 +7,7 @@ import sbtrelease.ReleasePlugin.autoImport.ReleaseTransformations._
 val mainScalaVersion = "3.3.1"
 val secondaryScalaVersions = Seq("2.12.18", "2.13.12")
 
-val scalaKryoVersion = "1.0.2"
+val scalaKryoVersion = "1.1.0"
 val defaultPekkoVersion = "1.0.1"
 val pekkoVersion =
   System.getProperty("pekko.build.version", defaultPekkoVersion) match {
diff --git a/project/plugins.sbt b/project/plugins.sbt
index b27d213..aaedc9a 100644
--- a/project/plugins.sbt
+++ b/project/plugins.sbt
@@ -3,7 +3,7 @@
 // sbt-osgi 0.9.6 is available but breaks populating pekko-protobuf-v3
 addSbtPlugin("com.typesafe.sbt" % "sbt-osgi" % "0.9.4")
 
-addSbtPlugin("org.xerial.sbt" % "sbt-sonatype" % "3.9.21")
+addSbtPlugin("org.xerial.sbt" % "sbt-sonatype" % "3.10.0")
 addSbtPlugin("com.github.sbt" % "sbt-release" % "1.1.0")
 addSbtPlugin("com.github.sbt" % "sbt-pgp" % "2.2.1")
 addSbtPlugin("org.scalameta" % "sbt-scalafmt" % "2.5.0")