diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b0ee9612..72c83cd3 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -18,6 +18,7 @@ jobs:
       matrix:
         java: [ '8', '11' ]
         scala: [
+            { version: '2.11.12' },
             { version: '2.12.13' },
             { version: '2.12.12' },
             { version: '2.12.11' },
diff --git a/build.sbt b/build.sbt
index 35cc0d5d..1b9a937d 100644
--- a/build.sbt
+++ b/build.sbt
@@ -3,6 +3,7 @@ import sbtcrossproject.CrossType
 
 val scalatestVersion = "3.2.8"
 val defaultScala213 = "2.13.5"
+val bin211 = Seq("2.11.12")
 val bin212 = Seq("2.12.13", "2.12.12", "2.12.11", "2.12.10", "2.12.9", "2.12.8")
 val bin213 =
   Seq(defaultScala213, "2.13.4", "2.13.3", "2.13.2", "2.13.1", "2.13.0")
@@ -56,7 +57,7 @@ lazy val sharedSettings = List(
       scalacOptions.value
     }
   },
-  crossScalaVersions := bin212 ++ bin213
+  crossScalaVersions := bin211 ++ bin212 ++ bin213
 )
 
 lazy val root = Project("scalac-scoverage", file("."))