diff --git a/project/Settings.scala b/project/Settings.scala
index 24d29be4..55f906bb 100644
--- a/project/Settings.scala
+++ b/project/Settings.scala
@@ -17,7 +17,8 @@ object Settings {
     val scalaTest = "3.2.15"
     val scalactic = "3.2.15"
     val scopt = "3.5.0"
-    val circe = "0.13.0"
+    val circe = "0.14.9"
+    val circeGenericExtras = "0.14.4"
     val jupyterScala = "0.4.1"
   }
 
@@ -26,7 +27,7 @@ object Settings {
       "io.circe" %%% "circe-core" % versions.circe,
       "io.circe" %%% "circe-generic" % versions.circe,
       "io.circe" %%% "circe-parser" % versions.circe,
-      "io.circe" %%% "circe-generic-extras" % versions.circe,
+      "io.circe" %%% "circe-generic-extras" % versions.circeGenericExtras,
       "org.scalatest" %%% "scalatest" % versions.scalaTest % "it,test",
     )
   )
diff --git a/shared/src/main/scala/com/cibo/evilplot/geometry/Gradient2D.scala b/shared/src/main/scala/com/cibo/evilplot/geometry/Gradient2D.scala
index e824d70a..ebed3354 100644
--- a/shared/src/main/scala/com/cibo/evilplot/geometry/Gradient2D.scala
+++ b/shared/src/main/scala/com/cibo/evilplot/geometry/Gradient2D.scala
@@ -35,7 +35,7 @@ import com.cibo.evilplot.colors.Color
 import com.cibo.evilplot.numeric.{Point, Point2d}
 import io.circe.generic.extras.Configuration
 import io.circe.generic.extras.semiauto._
-import io.circe.{Decoder, Encoder, ObjectEncoder}
+import io.circe.{Decoder, Encoder}
 
 sealed trait Gradient2d {
   val stops: Seq[GradientStop]