diff --git a/.github/workflows/dep_build_v2.yml b/.github/workflows/dep_build_v2.yml
index b2b8af2a..305e59b9 100644
--- a/.github/workflows/dep_build_v2.yml
+++ b/.github/workflows/dep_build_v2.yml
@@ -16,7 +16,7 @@ jobs:
       matrix:
         java_version: ['8', '17', '21', '24']
         # Versions need to align with ones in 'main.yml' workflow
-        kotlin_version: ['2.0.21', '2.1.20']
+        kotlin_version: ['2.0.21', '2.1.20', '2.2.0-RC']
     env:
       JAVA_OPTS: "-XX:+TieredCompilation -XX:TieredStopAtLevel=1"
     steps:
diff --git a/.github/workflows/dep_build_v3.yml b/.github/workflows/dep_build_v3.yml
index 2559266a..9ed25959 100644
--- a/.github/workflows/dep_build_v3.yml
+++ b/.github/workflows/dep_build_v3.yml
@@ -14,7 +14,7 @@ jobs:
       matrix:
         java_version: ['17', '21', '24']
         # Versions need to align with ones in 'main.yml' workflow
-        kotlin_version: ['2.0.21', '2.1.20']
+        kotlin_version: ['2.0.21', '2.1.20', '2.2.0-RC']
     env:
       JAVA_OPTS: "-XX:+TieredCompilation -XX:TieredStopAtLevel=1"
     steps:
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 41531c02..74ba36e6 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -21,7 +21,7 @@ jobs:
       max-parallel: 5
       matrix:
         java_version: ['8', '11', '17', '21', '24']
-        kotlin_version: ['2.0.21', '2.1.20']
+        kotlin_version: ['2.0.21', '2.1.20', '2.2.0-RC']
         include:
           - java_version: '8'
             kotlin_version: '2.0.21'
diff --git a/README.md b/README.md
index 76b0adb0..ebbde148 100644
--- a/README.md
+++ b/README.md
@@ -112,7 +112,7 @@ println(arrayNode.toString()) // ["foo",true,1,1.0,"YmFy"]
 Different `kotlin-core` versions are supported by different Jackson Kotlin module minor versions.
 Here is an incomplete list of supported versions:
 
-* Jackson 2.20.x: Kotlin-core 2.0 - 2.1
+* Jackson 2.20.x: Kotlin-core 2.0 - 2.2
 * Jackson 2.19.x: Kotlin-core 1.9 - 2.1
 * Jackson 2.18.x: Kotlin-core 1.8 - 2.1
 * Jackson 2.17.x: Kotlin-core 1.7 - 2.0