diff --git a/.gitignore b/.gitignore
index be041ea..fbf5f87 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,3 +2,4 @@
 /polyml.5.5.2.tar.gz
 /v5.6.tar.gz
 /v5.7.tar.gz
+/polyml-5.7.1.tar.gz
diff --git a/polyml-crowbar.patch b/polyml-crowbar.patch
deleted file mode 100644
index 29b1b76..0000000
--- a/polyml-crowbar.patch
+++ /dev/null
@@ -1,11 +0,0 @@
---- libpolyml/processes.cpp.orig	2017-03-22 11:51:06.000000000 -0600
-+++ libpolyml/processes.cpp	2017-08-19 16:15:49.545151184 -0600
-@@ -1885,7 +1885,7 @@ void Processes::CrowBarFn(void)
- #if (defined(HAVE_PTHREAD) || defined(HAVE_WINDOWS_H))
-     shutdownLock.Lock();
-     crowbarRunning = true;
--    if (crowbarLock.WaitFor(&shutdownLock, 20000)) // Wait for 20s
-+    if (crowbarLock.WaitFor(&shutdownLock, 200000)) // Wait for 200s
-     {
-         // We've been woken by the main thread.  Let it do the shutdown.
-         crowbarStopped.Signal();
diff --git a/polyml.spec b/polyml.spec
index 2ba95a0..b7a6986 100644
--- a/polyml.spec
+++ b/polyml.spec
@@ -2,16 +2,13 @@
 %undefine _hardened_build
 
 Name:           polyml
-Version:        5.7
-Release:        3%{?dist}
+Version:        5.7.1
+Release:        1%{?dist}
 Summary:        Poly/ML compiler and runtime system
 
 License:        LGPLv2+
 URL:            http://www.polyml.org/
-Source0:        https://github.com/%{name}/%{name}/archive/v%{version}.tar.gz
-
-# Increase the main thread timeout, which is often reached on koji builders
-Patch0:         %{name}-crowbar.patch
+Source0:        https://github.com/%{name}/%{name}/archive/v%{version}/%{name}-%{version}.tar.gz
 
 # The standard solution to kill the libtool-induced RPATH is to edit the
 # libtool script to kill it.  However, that causes problems for us as we need
@@ -33,9 +30,6 @@ BuildRequires:  libXt-devel
 Requires:       gcc-c++
 Requires:       polyml-libs%{?_isa} = %{version}-%{release}
 
-# list of supported arches from configure.ac
-ExclusiveArch: %{ix86} x86_64 sparc sparcv8 sparcv9 sparcv9v ppc %{power64} %{arm} aarch64 ia64 mips mipsel
-
 %description
 Poly/ML is a full implementation of Standard ML available as
 open-source.  This release supports the ML97 version of the language
@@ -56,7 +50,9 @@ Runtime libraries for Poly/ML.
 
 %prep
 %setup -q
-%patch0
+
+# Fix end of line encoding
+sed -i 's/\r//' documentation/main.css
 
 %build
 # Some hand-coded assembler is included.  Because it does not contain an
@@ -110,6 +106,11 @@ make check
 %{_libdir}/libpolyml.so.*
 
 %changelog
+* Fri Dec 29 2017 Jerry James <loganjerry@gmail.com> - 5.7.1-1
+- New upstream version
+- Drop upstreamed -crowbar patch
+- Drop ExclusiveArch tag; all Fedora arches are now supported
+
 * Sat Aug 19 2017 Jerry James <loganjerry@gmail.com> - 5.7-3
 - Added -crowbar patch to make timeouts while building less likely
 
diff --git a/sources b/sources
index be7172e..2931aa0 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (v5.7.tar.gz) = c1a85720b79c1b6a0be8f7bcf35ff18215f918e1eb6819a6f154f96ae7e1a3a878fe01a80c5d614892792f27f7577530dafb4d684e710e82f8bf68bd55da2c2e
+SHA512 (polyml-5.7.1.tar.gz) = 0b597f2fc9a68b764d4621e4e6b9c69083181bdfae66f53d0033bfc9661b9c42d252a42a72123245e8a55176a673d5343d6dd7936ae806d330b5e2b81f35e4d6