diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 449037e..965e4be 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -21,20 +21,28 @@ jobs:
     strategy:
       matrix:
         include:
-          - scala-version: 2.11.8
+          - scala-version: 2.11.12
             spark-version: 2.3.0
-          - scala-version: 2.11.8
+          - scala-version: 2.11.12
             spark-version: 2.4.3
-          - scala-version: 2.12.11
+          - scala-version: 2.12.18
             spark-version: 2.4.3
-          - scala-version: 2.12.11
+          - scala-version: 2.12.18
             spark-version: 3.0.0
-          - scala-version: 2.12.11
+          - scala-version: 2.12.18
             spark-version: 3.1.1
-          - scala-version: 2.12.11
-            spark-version: 3.2.0
-          - scala-version: 2.13.10
-            spark-version: 3.2.0
+          - scala-version: 2.12.18
+            spark-version: 3.2.4
+          - scala-version: 2.13.11
+            spark-version: 3.2.4
+          - scala-version: 2.12.18
+            spark-version: 3.3.3
+          - scala-version: 2.13.11
+            spark-version: 3.3.3
+          - scala-version: 2.12.18
+            spark-version: 3.4.1
+          - scala-version: 2.13.11
+            spark-version: 3.4.1
     if: "! contains(toJSON(github.event.commits.*.message), '[skip ci]')"
     steps:
       - name: Check out code
diff --git a/README.md b/README.md
index 6e9a384..ee1f964 100644
--- a/README.md
+++ b/README.md
@@ -37,7 +37,7 @@ If you want to use the library with arbitrary Spark and Scala versions, you can
 build command.
 
 ```bash
-./gradlew build -PsparkVersion=3.2.0 -PscalaVersion=2.13.10
+./gradlew build -PsparkVersion=3.4.1 -PscalaVersion=2.13.11
 ```
 
 To force a rebuild of the library, you can use:
diff --git a/isolation-forest/build.gradle b/isolation-forest/build.gradle
index 9d35dd5..fe5770c 100644
--- a/isolation-forest/build.gradle
+++ b/isolation-forest/build.gradle
@@ -13,7 +13,7 @@ def sparkVersion = findProperty("sparkVersion") ?: "2.3.0"  // Spark 2.3.0 is th
 println "Spark version: " + sparkVersion
 
 dependencies {
-    compile("com.chuusai:shapeless_" + scalaVersionShort + ":2.3.2")
+    compile("com.chuusai:shapeless_" + scalaVersionShort + ":2.3.10")
     if(VersionNumber.parse(sparkVersion) >= VersionNumber.parse("2.4.0")) {
         compile("org.apache.spark:spark-avro_" + scalaVersionShort + ":" + sparkVersion)
     } else {