diff --git a/.github/workflows/python-ci.yml b/.github/workflows/python-ci.yml
index 9309d254b..075f9f582 100644
--- a/.github/workflows/python-ci.yml
+++ b/.github/workflows/python-ci.yml
@@ -6,6 +6,9 @@ jobs:
       fail-fast: false
       matrix:
         include:
+          - spark-version: 3.5.0
+            scala-version: 2.12.18
+            python-version: 3.9
           - spark-version: 3.4.1
             scala-version: 2.12.17
             python-version: 3.9
diff --git a/.github/workflows/scala-ci.yml b/.github/workflows/scala-ci.yml
index 542ccfb0b..8be2f58a8 100644
--- a/.github/workflows/scala-ci.yml
+++ b/.github/workflows/scala-ci.yml
@@ -6,6 +6,10 @@ jobs:
       fail-fast: false
       matrix:
         include:
+          - spark-version: 3.5.0
+            scala-version: 2.13.8
+          - spark-version: 3.5.0
+            scala-version: 2.12.12
           - spark-version: 3.4.1
             scala-version: 2.13.8
           - spark-version: 3.4.1
@@ -14,10 +18,10 @@ jobs:
             scala-version: 2.13.8
           - spark-version: 3.3.3
             scala-version: 2.12.12
-          - spark-version: 3.2.4
-            scala-version: 2.12.12
           - spark-version: 3.2.4
             scala-version: 2.13.5
+          - spark-version: 3.2.4
+            scala-version: 2.12.12
     runs-on: ubuntu-22.04
     env:
       # define Java options for both official sbt and sbt-extras
diff --git a/build.sbt b/build.sbt
index 522c3d34c..df608c00e 100644
--- a/build.sbt
+++ b/build.sbt
@@ -5,9 +5,10 @@ import ReleaseTransformations._
 
 resolvers += "Spark snapshot repository" at "https://repository.apache.org/snapshots/"
 
-val sparkVer = sys.props.getOrElse("spark.version", "3.4.1")
+val sparkVer = sys.props.getOrElse("spark.version", "3.5.0")
 val sparkBranch = sparkVer.substring(0, 3)
 val defaultScalaVer = sparkBranch match {
+  case "3.5" => "2.12.18"
   case "3.4" => "2.12.17"
   case "3.3" => "2.12.15"
   case "3.2" => "2.12.15"
diff --git a/dev/release.py b/dev/release.py
index e0f8c66e2..719886671 100755
--- a/dev/release.py
+++ b/dev/release.py
@@ -39,7 +39,7 @@ def verify(prompt, interactive):
 @click.option("--publish-docs", type=bool, default=PUBLISH_DOCS_DEFAULT, show_default=True,
               help="Publish docs to github-pages.")
 @click.option("--spark-version", multiple=True, show_default=True,
-              default=["3.2.4", "3.3.3", "3.4.1"])
+              default=["3.2.4", "3.3.3", "3.4.1", "3.5.0"])
 def main(release_version, next_version, publish_to, no_prompt, git_remote, publish_docs,
          spark_version):
     interactive = not no_prompt
diff --git a/src/test/scala/org/graphframes/lib/ConnectedComponentsSuite.scala b/src/test/scala/org/graphframes/lib/ConnectedComponentsSuite.scala
index 0c0ea66e2..96acd0bde 100644
--- a/src/test/scala/org/graphframes/lib/ConnectedComponentsSuite.scala
+++ b/src/test/scala/org/graphframes/lib/ConnectedComponentsSuite.scala
@@ -215,18 +215,31 @@ class ConnectedComponentsSuite extends SparkFunSuite with GraphFrameTestSparkCon
   }
 
   test("intermediate storage level") {
-    val friends = Graphs.friends
-    val expected = Set(Set("a", "b", "c", "d", "e", "f"), Set("g"))
-
-    val cc = friends.connectedComponents
-    assert(cc.getIntermediateStorageLevel === StorageLevel.MEMORY_AND_DISK)
-
-    for (storageLevel <- Seq(StorageLevel.DISK_ONLY, StorageLevel.MEMORY_ONLY, StorageLevel.NONE)) {
-      // TODO: it is not trivial to confirm the actual storage level used
-      val components = cc
-        .setIntermediateStorageLevel(storageLevel)
-        .run()
-      assertComponents(components, expected)
+    // disabling adaptive query execution helps assertComponents
+    val enabled = spark.conf.getOption("spark.sql.adaptive.enabled")
+    try {
+      spark.conf.set("spark.sql.adaptive.enabled", value = false)
+
+      val friends = Graphs.friends
+      val expected = Set(Set("a", "b", "c", "d", "e", "f"), Set("g"))
+
+      val cc = friends.connectedComponents
+      assert(cc.getIntermediateStorageLevel === StorageLevel.MEMORY_AND_DISK)
+
+      for (storageLevel <- Seq(StorageLevel.DISK_ONLY, StorageLevel.MEMORY_ONLY, StorageLevel.NONE)) {
+        // TODO: it is not trivial to confirm the actual storage level used
+        val components = cc
+          .setIntermediateStorageLevel(storageLevel)
+          .run()
+        assertComponents(components, expected)
+      }
+    } finally {
+      // restoring earlier conf
+      if (enabled.isDefined) {
+        spark.conf.set("spark.sql.adaptive.enabled", value = enabled.get)
+      } else {
+        spark.conf.unset("spark.sql.adaptive.enabled")
+      }
     }
   }