diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 34b5261b..aa8bfba6 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -16,14 +16,14 @@ jobs:
       fail-fast: false
       matrix:
         java: [8, 11]
-        scala: [2.12.17, 2.13.8, 3.1.2]
+        scala: [2.12.20, 2.13.8, 3.1.2]
         exclude:
           - java: 8
             scala: 2.13.1
           - java: 8
             scala: 3.1.2
           - java: 11
-            scala: 2.12.17
+            scala: 2.12.20
     steps:
       - uses: actions/checkout@v2
       - uses: olafurpg/setup-scala@v10
diff --git a/build.sbt b/build.sbt
index 5c5d9876..e9e1234b 100644
--- a/build.sbt
+++ b/build.sbt
@@ -22,7 +22,7 @@ skip in publish := true //required by sbt-ci-release
 def sharedSettings(publishForScala3: Boolean= true) = {
   Seq(
     scalaVersion := "2.13.8",
-    crossScalaVersions := Seq("2.12.17", "2.13.8") ++ (if (publishForScala3) Seq("3.1.2") else Seq.empty)
+    crossScalaVersions := Seq("2.12.20", "2.13.8") ++ (if (publishForScala3) Seq("3.1.2") else Seq.empty)
   ,
     publishArtifact := (CrossVersion.partialVersion(scalaVersion.value) match {
       case Some((3, _)) => publishForScala3