diff --git a/src/main/java/org/jruby/rack/ext/Input.java b/src/main/java/org/jruby/rack/ext/Input.java
index 2cdd8e3c3..3824e4fd5 100644
--- a/src/main/java/org/jruby/rack/ext/Input.java
+++ b/src/main/java/org/jruby/rack/ext/Input.java
@@ -43,25 +43,6 @@
  */
 @SuppressWarnings("serial")
 public class Input extends RubyObject {
-    private static final MethodHandle CONCAT_WITH_CODERANGE;
-
-    static {
-        // set up coderange-aware concat that works with the new catWithCodeRange as well as earlier JRuby without it.
-        // TODO: remove and replace with direct call once 9.3 is fully unsupported
-        MethodHandle catWithCR = null;
-        MethodHandles.Lookup lookup = MethodHandles.publicLookup();
-        try {
-            catWithCR = lookup.findVirtual(RubyString.class, "catWithCodeRange", MethodType.methodType(int.class, ByteList.class, int.class));
-        } catch (NoSuchMethodException | IllegalAccessException e) {
-            try {
-                catWithCR = lookup.findVirtual(RubyString.class, "cat19", MethodType.methodType(int.class, ByteList.class, int.class));
-            } catch (Exception t) {
-                Helpers.throwException(t);
-            }
-        }
-        CONCAT_WITH_CODERANGE = catWithCR;
-    }
-
     static final ObjectAllocator ALLOCATOR = new ObjectAllocator() {
         public IRubyObject allocate(Ruby runtime, RubyClass klass) {
             return new Input(runtime, klass);
@@ -172,7 +153,7 @@ public IRubyObject read(final ThreadContext context, final IRubyObject[] args) {
                 if ( buffer != null ) {
                     buffer.clear();
                     try {
-                        int unused = (int) CONCAT_WITH_CODERANGE.invokeExact(buffer, new ByteList(bytes, false), StringSupport.CR_UNKNOWN);
+                        int unused = buffer.cat19(new ByteList(bytes, false), StringSupport.CR_UNKNOWN);
                     } catch (Throwable t) {
                         Helpers.throwException(t);
                     }
diff --git a/src/main/ruby/jruby/rack/version.rb b/src/main/ruby/jruby/rack/version.rb
index 60322830f..86e2bce5f 100644
--- a/src/main/ruby/jruby/rack/version.rb
+++ b/src/main/ruby/jruby/rack/version.rb
@@ -7,6 +7,6 @@
 
 module JRuby
   module Rack
-    VERSION = '1.2.2'
+    VERSION = '1.2.2.kvp5'
   end
 end