diff --git a/core/src/main/scala/io/circe/sbt/CirceOrgPlugin.scala b/core/src/main/scala/io/circe/sbt/CirceOrgPlugin.scala
index cf07459..dda3cb6 100644
--- a/core/src/main/scala/io/circe/sbt/CirceOrgPlugin.scala
+++ b/core/src/main/scala/io/circe/sbt/CirceOrgPlugin.scala
@@ -93,7 +93,7 @@ object CirceOrgPlugin extends AutoPlugin {
                   UseRef.Public(
                     "codecov",
                     "codecov-action",
-                    "v3"
+                    "v4"
                   ),
                   params = Map(
                     "flags" -> List("${{matrix.scala}}").mkString(",")