diff --git a/core/pom.xml b/core/pom.xml
index 9851fb16d2e..cef865c2325 100644
--- a/core/pom.xml
+++ b/core/pom.xml
@@ -92,7 +92,7 @@
     <dependency>
       <groupId>org.jruby.jcodings</groupId>
       <artifactId>jcodings</artifactId>
-      <version>1.0.10</version>
+      <version>1.0.13-SNAPSHOT</version>
       <type>jar</type>
     </dependency>
     <dependency>
diff --git a/spec/regression/GH-2581_utf32_should_alias_utf32be_spec.rb b/spec/regression/GH-2581_utf32_should_alias_utf32be_spec.rb
new file mode 100644
index 00000000000..0c152a2ea4d
--- /dev/null
+++ b/spec/regression/GH-2581_utf32_should_alias_utf32be_spec.rb
@@ -0,0 +1,10 @@
+if RUBY_VERSION >= "1.9"
+  describe "A string encoded as 'UTF-32'" do
+    it "transcodes as UTF-32BE" do
+      a = "a"
+      a32 = a.encode("UTF-32")
+      a8 = a32.encode(Encoding::UTF_8)
+      expect(a8).to eq(a)
+    end
+  end
+end