diff --git a/build.sbt b/build.sbt
index 47e8d7c5..f17c9571 100644
--- a/build.sbt
+++ b/build.sbt
@@ -45,15 +45,15 @@ lazy val delimitedJVM = `validation-delimited`.jvm
 lazy val delimitedJS = `validation-delimited`.js
 lazy val delimited = aggregate("validation-delimited", delimitedJVM, delimitedJS)
 
-lazy val `validation-json-ast` = crossProject
+lazy val `validation-jsonast` = crossProject
   .crossType(CrossType.Full)
   .settings(validationSettings: _*)
   .dependsOn(`validation-core`)
   .jvmSettings(libraryDependencies +=
     "com.typesafe.play" %% "play-json" % playVersion)
-lazy val jsonAstJVM = `validation-json-ast`.jvm
-lazy val jsonAstJS = `validation-json-ast`.js
-lazy val jsonAst = aggregate("validation-json-ast", jsonAstJVM, jsonAstJS)
+lazy val jsonAstJVM = `validation-jsonast`.jvm
+lazy val jsonAstJS = `validation-jsonast`.js
+lazy val jsonAst = aggregate("validation-jsonast", jsonAstJVM, jsonAstJS)
 
 lazy val `validation-playjson` = project
   .settings(validationSettings: _*)
diff --git a/date-tests/src/test/scala/DateSpec.scala b/date-tests/src/test/scala/DateSpec.scala
index 411c6b04..9f7c7984 100644
--- a/date-tests/src/test/scala/DateSpec.scala
+++ b/date-tests/src/test/scala/DateSpec.scala
@@ -481,7 +481,7 @@ class DateSpec extends WordSpec with Matchers {
   }
 
   "jsonAst" should {
-    import jto.validation.jsonAst._
+    import jto.validation.jsonast._
     import Rules._, Writes._
 
     "Format" when {
diff --git a/docs/src/main/tut/ReleaseNotes.md b/docs/src/main/tut/ReleaseNotes.md
index 5ea648ce..48425fe8 100644
--- a/docs/src/main/tut/ReleaseNotes.md
+++ b/docs/src/main/tut/ReleaseNotes.md
@@ -6,6 +6,6 @@
 
 - Impove error reporting ([#40](/~https://github.com/jto/validation/pull/40) [1](/~https://github.com/jto/validation/commit/357b87778f19fbbc06a49da08cb2dccf9e0a40e3), [2](/~https://github.com/jto/validation/commit/c1bdac7fcff098b1d85c6881c731d5fd4ee2ac2e))
 
-- Rework project structure: `json` → `playjson`, `json4s` → `json-ast`, `jsjson` ([#50](/~https://github.com/jto/validation/pull/50) [0](/~https://github.com/jto/validation/commit/f95ac30b1d1346a27e26c08841ee06c00340891f) [1](/~https://github.com/jto/validation/commit/5b36f606334a5fe26715cf0d7c47ebf861acb811), [2](/~https://github.com/jto/validation/commit/3f31f4917d01b8f6fdefe4adaca70ddc823722db))
+- Rework project structure: `json` → `playjson`, `json4s` → `jsonast`, `jsjson` ([#50](/~https://github.com/jto/validation/pull/50) [0](/~https://github.com/jto/validation/commit/f95ac30b1d1346a27e26c08841ee06c00340891f) [1](/~https://github.com/jto/validation/commit/5b36f606334a5fe26715cf0d7c47ebf861acb811), [2](/~https://github.com/jto/validation/commit/3f31f4917d01b8f6fdefe4adaca70ddc823722db))
 
 - Add Scala.js support ([#42](/~https://github.com/jto/validation/pull/42) [1](/~https://github.com/jto/validation/commit/db359abfbe90d2b3b853beabcbabe88ecd1cfddb), [2](/~https://github.com/jto/validation/commit/568aa1fa1df06d775abb583cac8da679c1301227), [3](/~https://github.com/jto/validation/commit/d67d6dee7d99d27d6cf751cc69b83235b57a8246), [4](/~https://github.com/jto/validation/commit/67499a823ff463860b72d6697cf45b5764c475b2), [5](/~https://github.com/jto/validation/commit/d720ba265541a90f225c388043b5430a68e9fff3))
diff --git a/docs/src/main/tut/V2MigrationGuide.md b/docs/src/main/tut/V2MigrationGuide.md
index b31777a5..74f4106d 100644
--- a/docs/src/main/tut/V2MigrationGuide.md
+++ b/docs/src/main/tut/V2MigrationGuide.md
@@ -21,7 +21,7 @@ becomes
 #### Package name
 
 - Since the library does not depend on Play anymore and is not planned to be integrated into Play, the package names have changed. Basically `play.api.mapping` now becomes `jto.validation`. A simple search and replace in your project should work.
-- The validation api support both json4s and play-json. Therefore, the package name for play json changes. `play.api.mapping.json` becomes `play.api.mapping.playjson`
+- The validation api support several json representations. Therefore, the package name for play json changes. `play.api.mapping.json` becomes `play.api.mapping.playjson`
 
 #### Rule renaming
 
diff --git a/play-scalajs-example/build.sbt b/play-scalajs-example/build.sbt
index 7cc27d1b..c683e638 100644
--- a/play-scalajs-example/build.sbt
+++ b/play-scalajs-example/build.sbt
@@ -16,6 +16,7 @@ lazy val jvm = project
   //   "io.github.jto" %% "validation-playjson" % "2.0"))
   .dependsOn(ProjectRef(file(".."), "validation-core"))
   .dependsOn(ProjectRef(file(".."), "validation-playjson"))
+  .dependsOn(ProjectRef(file(".."), "validation-jsonast"))
 
 lazy val js = project
   .in(file("js"))
@@ -30,6 +31,7 @@ lazy val js = project
   //   "io.github.jto" %%% "validation-jsjson" % "2.0"))
   .dependsOn(ProjectRef(file(".."), "validation-core"))
   .dependsOn(ProjectRef(file(".."), "validation-jsjson"))
+  .dependsOn(ProjectRef(file(".."), "validation-jsonast"))
 
 lazy val shared = crossProject.crossType(CrossType.Pure)
   .in(file("shared"))
diff --git a/validation-json-ast/js/src/main/scala/Ast.scala b/validation-jsonast/js/src/main/scala/Ast.scala
similarity index 100%
rename from validation-json-ast/js/src/main/scala/Ast.scala
rename to validation-jsonast/js/src/main/scala/Ast.scala
diff --git a/validation-json-ast/jvm/src/main/scala/Ast.scala b/validation-jsonast/jvm/src/main/scala/Ast.scala
similarity index 100%
rename from validation-json-ast/jvm/src/main/scala/Ast.scala
rename to validation-jsonast/jvm/src/main/scala/Ast.scala
diff --git a/validation-json-ast/shared/src/main/scala/Ast.scala b/validation-jsonast/shared/src/main/scala/Ast.scala
similarity index 100%
rename from validation-json-ast/shared/src/main/scala/Ast.scala
rename to validation-jsonast/shared/src/main/scala/Ast.scala
diff --git a/validation-json-ast/shared/src/main/scala/Rules.scala b/validation-jsonast/shared/src/main/scala/Rules.scala
similarity index 100%
rename from validation-json-ast/shared/src/main/scala/Rules.scala
rename to validation-jsonast/shared/src/main/scala/Rules.scala
diff --git a/validation-json-ast/shared/src/main/scala/Writes.scala b/validation-jsonast/shared/src/main/scala/Writes.scala
similarity index 100%
rename from validation-json-ast/shared/src/main/scala/Writes.scala
rename to validation-jsonast/shared/src/main/scala/Writes.scala
diff --git a/validation-json-ast/shared/src/test/scala/AstSpec.scala b/validation-jsonast/shared/src/test/scala/AstSpec.scala
similarity index 95%
rename from validation-json-ast/shared/src/test/scala/AstSpec.scala
rename to validation-jsonast/shared/src/test/scala/AstSpec.scala
index 2f428280..9c5ad313 100644
--- a/validation-json-ast/shared/src/test/scala/AstSpec.scala
+++ b/validation-jsonast/shared/src/test/scala/AstSpec.scala
@@ -1,4 +1,4 @@
-import jto.validation.jsonAst._
+import jto.validation.jsonast._
 import org.scalatest._
 
 class AstSpec extends WordSpec with Matchers {
diff --git a/validation-json-ast/shared/src/test/scala/FormatSpec.scala b/validation-jsonast/shared/src/test/scala/FormatSpec.scala
similarity index 99%
rename from validation-json-ast/shared/src/test/scala/FormatSpec.scala
rename to validation-jsonast/shared/src/test/scala/FormatSpec.scala
index a8e611b1..3629ffac 100644
--- a/validation-json-ast/shared/src/test/scala/FormatSpec.scala
+++ b/validation-jsonast/shared/src/test/scala/FormatSpec.scala
@@ -1,5 +1,5 @@
 import jto.validation._
-import jto.validation.jsonAst._
+import jto.validation.jsonast._
 import org.scalatest._
 import scala.Function.unlift
 
diff --git a/validation-json-ast/shared/src/test/scala/MacroSpec.scala b/validation-jsonast/shared/src/test/scala/MacroSpec.scala
similarity index 99%
rename from validation-json-ast/shared/src/test/scala/MacroSpec.scala
rename to validation-jsonast/shared/src/test/scala/MacroSpec.scala
index 463bbeca..9ced6b76 100644
--- a/validation-json-ast/shared/src/test/scala/MacroSpec.scala
+++ b/validation-jsonast/shared/src/test/scala/MacroSpec.scala
@@ -1,5 +1,5 @@
 import jto.validation._
-import jto.validation.jsonAst._
+import jto.validation.jsonast._
 import org.scalatest._
 
 case class User(age: Int, name: String)
diff --git a/validation-json-ast/shared/src/test/scala/RulesSpec.scala b/validation-jsonast/shared/src/test/scala/RulesSpec.scala
similarity index 99%
rename from validation-json-ast/shared/src/test/scala/RulesSpec.scala
rename to validation-jsonast/shared/src/test/scala/RulesSpec.scala
index 29fb7d7b..f01970d2 100644
--- a/validation-json-ast/shared/src/test/scala/RulesSpec.scala
+++ b/validation-jsonast/shared/src/test/scala/RulesSpec.scala
@@ -1,5 +1,5 @@
 import jto.validation._
-import jto.validation.jsonAst._
+import jto.validation.jsonast._
 import org.scalatest._
 
 class RulesSpec extends WordSpec with Matchers {
diff --git a/validation-json-ast/shared/src/test/scala/WritesSpec.scala b/validation-jsonast/shared/src/test/scala/WritesSpec.scala
similarity index 99%
rename from validation-json-ast/shared/src/test/scala/WritesSpec.scala
rename to validation-jsonast/shared/src/test/scala/WritesSpec.scala
index 84ed8620..52a6f41e 100644
--- a/validation-json-ast/shared/src/test/scala/WritesSpec.scala
+++ b/validation-jsonast/shared/src/test/scala/WritesSpec.scala
@@ -1,6 +1,6 @@
 import jto.validation._
-import jto.validation.jsonAst._
-import jto.validation.jsonAst.Writes._
+import jto.validation.jsonast._
+import jto.validation.jsonast.Writes._
 import org.scalatest._
 import scala.Function.unlift