diff --git a/spec/monads/either/right_spec.cr b/spec/monads/either/right_spec.cr
index dff57fe..b761145 100644
--- a/spec/monads/either/right_spec.cr
+++ b/spec/monads/either/right_spec.cr
@@ -209,6 +209,14 @@ describe Monads::Right do
     end
   end
 
+  describe "#|" do
+  it "#| apply proc" do
+    monad = Monads::Right.new(1) | ->(x : Int32) { Monads::Right.new(x.to_s) }
+    monad.should eq(Monads::Right.new("1"))
+  end
+end
+
+
   describe "self.return" do
     it "`self.return` return Right" do
       monad = Monads::Either.return(1)
diff --git a/spec/monads_spec.cr b/spec/monads_spec.cr
index fec558e..8208ec3 100644
--- a/spec/monads_spec.cr
+++ b/spec/monads_spec.cr
@@ -3,6 +3,6 @@ require "./monads/**"
 
 describe Monads do
   it "should have version" do
-    Monads::VERSION.should eq("0.5.1")
+    Monads::VERSION.should eq("0.7.0")
   end
 end
diff --git a/src/monads.cr b/src/monads.cr
index 575cf7e..9363c3b 100644
--- a/src/monads.cr
+++ b/src/monads.cr
@@ -3,5 +3,5 @@ require "./monads/*"
 module Monads
   # Requirements for 1.0.0
   # - Documentation
-  VERSION = "0.5.1"
+  VERSION = "0.6.0"
 end
diff --git a/src/monads/monad.cr b/src/monads/monad.cr
index a062c72..e8551c9 100644
--- a/src/monads/monad.cr
+++ b/src/monads/monad.cr
@@ -16,10 +16,6 @@ module Monads
       self.bind(other)
     end
 
-    def |(&block : _ -> Monad(U)) forall U
-      self.bind(block)
-    end
-
     def >>(other : Monad(U)) forall U
       other
     end