diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 0735a99e7..806db616a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -22,7 +22,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        scala: [0.27.0-RC1, 3.0.0-M1, 2.11.12, 2.12.10, 2.13.3]
+        scala: [3.0.0-M1, 3.0.0-M2, 2.11.12, 2.12.10, 2.13.3]
         java: [adopt@1.8, adopt@1.11]
         platform: [jvm]
         workers: [1, 4]
@@ -30,12 +30,12 @@ jobs:
           - workers: 1
             os: ubuntu-latest
             java: adopt@1.8
-            scala: 0.27.0-RC1
+            scala: 3.0.0-M1
             platform: js
           - workers: 1
             os: ubuntu-latest
             java: adopt@1.8
-            scala: 3.0.0-M1
+            scala: 3.0.0-M2
             platform: js
           - workers: 1
             os: ubuntu-latest
@@ -139,7 +139,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        scala: [0.27.0-RC1, 3.0.0-M1, 2.11.12, 2.12.10, 2.13.3]
+        scala: [3.0.0-M1, 3.0.0-M2, 2.11.12, 2.12.10, 2.13.3]
         java: [adopt@1.8]
     runs-on: ${{ matrix.os }}
     steps:
diff --git a/build.sbt b/build.sbt
index ac75d86a5..bdae50e96 100644
--- a/build.sbt
+++ b/build.sbt
@@ -7,8 +7,8 @@ scalaVersionSettings
 val Scala211 = "2.11.12"
 val Scala212 = "2.12.10"
 val Scala213 = "2.13.3"
-val DottyOld = "0.27.0-RC1"
-val DottyNew = "3.0.0-M1"
+val DottyOld = "3.0.0-M1"
+val DottyNew = "3.0.0-M2"
 
 ThisBuild / crossScalaVersions := Seq(DottyOld, DottyNew, Scala211, Scala212, Scala213)
 ThisBuild / scalaVersion := (ThisBuild / crossScalaVersions).value.last