diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 223c7bd..5881867 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -15,7 +15,7 @@ jobs:
     strategy:
       matrix:
         java: [ '8', '11', '15' ]
-        scala: [ '2.13.4', '2.12.12', '2.11.12', '3.0.0-M3' ]
+        scala: [ '2.13.4', '2.12.12', '2.11.12', '3.0.0-RC1' ]
     steps:
     - uses: actions/checkout@v2
     - name: Set up JDK
diff --git a/build.sbt b/build.sbt
index d1a2db9..8df1976 100644
--- a/build.sbt
+++ b/build.sbt
@@ -6,7 +6,7 @@ organization := "io.github.sullis"
 
 scalaVersion := "2.12.12"
 
-crossScalaVersions := Seq(scalaVersion.value, "2.11.12", "2.13.4", "3.0.0-M3")
+crossScalaVersions := Seq(scalaVersion.value, "2.11.12", "2.13.4", "3.0.0-RC1")
 
 scalacOptions += "-target:jvm-1.8"