diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a0dac7c..afced57 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -12,7 +12,7 @@ on:
     branches: ['*']
   push:
     branches: ['*']
-    tags: [v*]
+    tags: [v*, v*]
 
 env:
   GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
@@ -23,7 +23,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        scala: [3.0.0-RC2]
+        scala: [3.0.0]
         java: [adopt@1.8]
     runs-on: ${{ matrix.os }}
     steps:
@@ -49,11 +49,11 @@ jobs:
             ~/Library/Caches/Coursier/v1
           key: ${{ runner.os }}-sbt-cache-v2-${{ hashFiles('**/*.sbt') }}-${{ hashFiles('project/build.properties') }}
 
-      # - name: Check that workflows are up to date
-      #   run: sbt ++${{ matrix.scala }} githubWorkflowCheck
+      - name: Check that workflows are up to date
+        run: sbt ++${{ matrix.scala }} githubWorkflowCheck
 
       - name: Build project
-        run: sbt ++${{ matrix.scala }} compile
+        run: sbt ++${{ matrix.scala }} test
 
       - name: Compress target directories
         run: tar cf targets.tar target core/target project/target
@@ -71,7 +71,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        scala: [3.0.0-RC2]
+        scala: [3.0.0]
         java: [adopt@1.8]
     runs-on: ${{ matrix.os }}
     steps:
@@ -97,12 +97,12 @@ jobs:
             ~/Library/Caches/Coursier/v1
           key: ${{ runner.os }}-sbt-cache-v2-${{ hashFiles('**/*.sbt') }}-${{ hashFiles('project/build.properties') }}
 
-      - name: Download target directories (3.0.0-RC2)
+      - name: Download target directories (3.0.0)
         uses: actions/download-artifact@v2
         with:
-          name: target-${{ matrix.os }}-3.0.0-RC2-${{ matrix.java }}
+          name: target-${{ matrix.os }}-3.0.0-${{ matrix.java }}
 
-      - name: Inflate target directories (3.0.0-RC2)
+      - name: Inflate target directories (3.0.0)
         run: |
           tar xf targets.tar
           rm targets.tar
diff --git a/build.sbt b/build.sbt
index 3231716..a5956c0 100644
--- a/build.sbt
+++ b/build.sbt
@@ -4,11 +4,11 @@ inThisBuild(Seq(
   homepage         := Some(url("https://github.com/tabdulradi/nullable")),
   scmInfo          := Some(ScmInfo(url("https://github.com/tabdulradi/nullable"), "scm:git@github.com:tabdulradi/nullable.git")),
 
-  scalaVersion := "3.0.0-RC2",
+  scalaVersion := "3.0.0",
   
   libraryDependencies ++= Seq(
-    "org.scalatest" %% "scalatest" % "3.2.7" % Test,
-    "org.scalacheck" %% "scalacheck" % "1.15.3" % Test
+    "org.scalatest" %% "scalatest" % "3.2.9" % Test,
+    "org.scalacheck" %% "scalacheck" % "1.15.4" % Test
   ),
 ))
 
@@ -19,5 +19,5 @@ lazy val root = (project in file("."))
   .aggregate(core)
   .settings(
     name := "nullable",
-    skip in publish := true
+    publish / skip := true
   )
diff --git a/core/src/test/scala/com/abdulradi/nullable/NullableSpec.scala b/core/src/test/scala/com/abdulradi/nullable/NullableSpec.scala
index ad55a48..2694a4c 100644
--- a/core/src/test/scala/com/abdulradi/nullable/NullableSpec.scala
+++ b/core/src/test/scala/com/abdulradi/nullable/NullableSpec.scala
@@ -126,16 +126,16 @@ class NullableSpec extends AnyFunSuite:
   }
 
   test("NullableZipNullable"){ 
-    assertEquals(Nullable("foo") zip Nullable("bar"), Nullable(("foo", "bar")))
+    assertEquals(Nullable("foo").zip(Nullable("bar")), Nullable(("foo", "bar")))
   }
   test("NullableZipNullable.empty"){   
-    assertEquals(Nullable("foo") zip Nullable.empty[String], null)
+    assertEquals(Nullable("foo").zip(Nullable.empty[String]), null)
   }
   test("Nullable.emptyZipNullable"){ 
-    assertEquals(Nullable.empty zip Nullable("bar"), null)
+    assertEquals(Nullable.empty.zip(Nullable("bar")), null)
   }
   test("Nullable.emptyZipNullable.empty"){ 
-    assertEquals(Nullable.empty zip Nullable.empty, null)
+    assertEquals(Nullable.empty.zip(Nullable.empty), null)
   }
 
   test("NullableUnzipToNullablePair"){ 
diff --git a/project/build.properties b/project/build.properties
index dbae93b..19479ba 100644
--- a/project/build.properties
+++ b/project/build.properties
@@ -1 +1 @@
-sbt.version=1.4.9
+sbt.version=1.5.2
diff --git a/project/plugins.sbt b/project/plugins.sbt
index a655dca..7ae4fb9 100644
--- a/project/plugins.sbt
+++ b/project/plugins.sbt
@@ -1,3 +1,2 @@
-addSbtPlugin("ch.epfl.lamp" % "sbt-dotty" % "0.5.3")
 addSbtPlugin("com.geirsson" % "sbt-ci-release" % "1.5.6")
 addSbtPlugin("com.codecommit" % "sbt-github-actions" % "0.10.1")
\ No newline at end of file