diff --git a/eth.gemspec b/eth.gemspec
index 387789b..aecc2d2 100644
--- a/eth.gemspec
+++ b/eth.gemspec
@@ -30,7 +30,7 @@ Gem::Specification.new do |spec|
   spec.require_paths = ["lib"]
   spec.test_files    = spec.files.grep %r{^(test|spec|features)/}
 
-  spec.add_dependency 'keccak', '~> 1.3'
+  spec.add_dependency 'keccak256'
   spec.add_dependency 'ffi', '~> 1.15'
   spec.add_dependency 'money-tree', '~> 0.10'
   spec.add_dependency 'rlp', '~> 0.7'
diff --git a/lib/eth.rb b/lib/eth.rb
index 4e7fcfc..3454272 100644
--- a/lib/eth.rb
+++ b/lib/eth.rb
@@ -1,4 +1,4 @@
-require 'digest/keccak'
+require 'keccak256'
 require 'ffi'
 require 'money-tree'
 require 'rlp'
diff --git a/lib/eth/open_ssl.rb b/lib/eth/open_ssl.rb
index a8ead15..8199a5a 100644
--- a/lib/eth/open_ssl.rb
+++ b/lib/eth/open_ssl.rb
@@ -6,12 +6,12 @@ class OpenSsl
     extend FFI::Library
 
     if FFI::Platform.windows?
-      ffi_lib 'libeay32', 'ssleay32'
+      ffi_lib 'libeay32', 'libssl-1_1-x64'
     else
       ffi_lib [
         'libssl.so.1.1.0', 'libssl.so.1.1',
         'libssl.so.1.0.0', 'libssl.so.10',
-        'ssl'
+       'ssl'
       ]
     end
 
diff --git a/lib/eth/utils.rb b/lib/eth/utils.rb
index 44a59d8..37b0830 100644
--- a/lib/eth/utils.rb
+++ b/lib/eth/utils.rb
@@ -65,11 +65,12 @@ def sha256(x)
     end
 
     def keccak256(x)
-      Digest::Keccak.new(256).digest(x)
+      Digest::Keccak256.new.hexdigest(x)
     end
 
     def keccak512(x)
-      Digest::Keccak.new(512).digest(x)
+      puts "keccak512 is broken in this version"
+      #Digest::Keccak.new(512).digest(x)
     end
 
     def keccak256_rlp(x)