diff --git a/ipaddr.gemspec b/ipaddr.gemspec
index ede9fed..f9beeeb 100644
--- a/ipaddr.gemspec
+++ b/ipaddr.gemspec
@@ -22,6 +22,8 @@ Both IPv4 and IPv6 are supported.
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
   spec.require_paths = ["lib"]
 
+  spec.required_ruby_version = ">= 2.3.0"
+
   spec.add_development_dependency "bundler", "~> 2.0"
   spec.add_development_dependency "rake", "~> 10.0"
   spec.add_development_dependency "test-unit"
diff --git a/lib/ipaddr.rb b/lib/ipaddr.rb
index 7fff54b..84e347c 100644
--- a/lib/ipaddr.rb
+++ b/lib/ipaddr.rb
@@ -595,7 +595,7 @@ def initialize(addr = '::', family = Socket::AF_UNSPEC)
       @mask_addr = (@family == Socket::AF_INET) ? IN4MASK : IN6MASK
     end
   rescue InvalidAddressError => e
-    raise e.class, "#{e.message}: #{addr}"
+    raise e.class, "#{e.message}: #{addr}", e.backtrace, cause: nil
   end
 
   def coerce_other(other)
diff --git a/test/test_ipaddr.rb b/test/test_ipaddr.rb
index 1aa24eb..7a2e8c6 100644
--- a/test/test_ipaddr.rb
+++ b/test/test_ipaddr.rb
@@ -85,18 +85,25 @@ def test_s_new
     assert_equal("1:2:3:4:5:6:7:0", IPAddr.new("1:2:3:4:5:6:7::").to_s)
     assert_equal("0:2:3:4:5:6:7:8", IPAddr.new("::2:3:4:5:6:7:8").to_s)
 
-    assert_raise(IPAddr::InvalidAddressError) { IPAddr.new("192.168.0.256") }
-    assert_raise(IPAddr::InvalidAddressError) { IPAddr.new("192.168.0.011") }
-    assert_raise(IPAddr::InvalidAddressError) { IPAddr.new("fe80::1%fxp0") }
-    assert_raise(IPAddr::InvalidAddressError) { IPAddr.new("[192.168.1.2]/120") }
-    assert_raise(IPAddr::InvalidAddressError) { IPAddr.new("[2001:200:300::]\nINVALID") }
-    assert_raise(IPAddr::InvalidAddressError) { IPAddr.new("192.168.0.1/32\nINVALID") }
-    assert_raise(IPAddr::InvalidPrefixError) { IPAddr.new("::1/255.255.255.0") }
-    assert_raise(IPAddr::InvalidPrefixError) { IPAddr.new("::1/129") }
-    assert_raise(IPAddr::InvalidPrefixError) { IPAddr.new("192.168.0.1/33") }
-    assert_raise(IPAddr::InvalidPrefixError) { IPAddr.new("192.168.0.1/255.255.255.1") }
-    assert_raise(IPAddr::AddressFamilyError) { IPAddr.new(1) }
-    assert_raise(IPAddr::AddressFamilyError) { IPAddr.new("::ffff:192.168.1.2/120", Socket::AF_INET) }
+    assert_invalid_ipaddr(IPAddr::InvalidAddressError, "192.168.0.256")
+    assert_invalid_ipaddr(IPAddr::InvalidAddressError, "192.168.0.011")
+    assert_invalid_ipaddr(IPAddr::InvalidAddressError, "fe80::1%fxp0")
+    assert_invalid_ipaddr(IPAddr::InvalidAddressError, "[192.168.1.2]/120")
+    assert_invalid_ipaddr(IPAddr::InvalidAddressError, "[2001:200:300::]\nINVALID")
+    assert_invalid_ipaddr(IPAddr::InvalidAddressError, "192.168.0.1/32\nINVALID")
+    assert_invalid_ipaddr(IPAddr::InvalidPrefixError, "::1/255.255.255.0")
+    assert_invalid_ipaddr(IPAddr::InvalidPrefixError, "::1/129")
+    assert_invalid_ipaddr(IPAddr::InvalidPrefixError, "192.168.0.1/33")
+    assert_invalid_ipaddr(IPAddr::InvalidPrefixError, "192.168.0.1/255.255.255.1")
+    assert_invalid_ipaddr(IPAddr::AddressFamilyError, 1)
+    assert_invalid_ipaddr(IPAddr::AddressFamilyError, "::ffff:192.168.1.2/120", Socket::AF_INET)
+  end
+
+  private def assert_invalid_ipaddr(exc, addr, *opts)
+    e = assert_raise(exc) { IPAddr.new(addr, *opts) }
+    if cause = e.cause and cause.class == exc
+      assert_not_send([e.message, :start_with?, cause.message])
+    end
   end
 
   def test_s_new_ntoh