diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 3ef53ad..7f409df 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -51,7 +51,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest]
-        scalaJsVersion: ["1.9.0", "1.10.0", "1.10.1", "1.11.0", "1.12.0"]
+        scalaJsVersion: ["1.9.0", "1.10.0", "1.10.1", "1.11.0", "1.12.0", "1.13.0"]
     steps:
       - uses: actions/checkout@v2
         with:
@@ -95,7 +95,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        scalaJsVersion: ["1.9.0", "1.10.0", "1.10.1", "1.11.0", "1.12.0"]
+        scalaJsVersion: ["1.9.0", "1.10.0", "1.10.1", "1.11.0", "1.12.0", "1.13.0"]
     steps:
       - uses: actions/checkout@v2
         with:
@@ -129,7 +129,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        scalaJsVersion: ["1.9.0", "1.10.0", "1.10.1", "1.11.0", "1.12.0"]
+        scalaJsVersion: ["1.9.0", "1.10.0", "1.10.1", "1.11.0", "1.12.0", "1.13.0"]
     steps:
       - uses: actions/checkout@v2
         with:
diff --git a/build.sc b/build.sc
index 5b9567d..109b0f5 100644
--- a/build.sc
+++ b/build.sc
@@ -18,8 +18,8 @@ import scala.util.Properties.isWin
 
 def scalaJsCliVersion = "1.1.1-sc5"
 def scala213 = "2.13.10"
-def latestScalaJsVersion = "1.12.0"
-def scalaJsVersions = Seq("1.9.0", "1.10.0", "1.10.1", "1.11.0", latestScalaJsVersion)
+def latestScalaJsVersion = "1.13.0"
+def scalaJsVersions = Seq("1.9.0", "1.10.0", "1.10.1", "1.11.0", "1.12.0", latestScalaJsVersion)
 
 object cli extends Cross[Cli](scalaJsVersions: _*)