diff --git a/mingw-w64-headers-3.1.0.tar.xz b/mingw-w64-headers-3.1.0.tar.xz
deleted file mode 100644
index ebcc58c..0000000
--- a/mingw-w64-headers-3.1.0.tar.xz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:e508175ed31cf60f5245c74670e21221fcda35e3a5588c6c2255e726535225ee
-size 4024112
diff --git a/mingw-w64-headers-3.1.99-r6638.tar.xz b/mingw-w64-headers-3.1.99-r6638.tar.xz
new file mode 100644
index 0000000..a61d2da
--- /dev/null
+++ b/mingw-w64-headers-3.1.99-r6638.tar.xz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f7739d796ed10cd8d1b295dfbc8522d46c3a0a3255405f0754d5ce5b862dc6fc
+size 51875840
diff --git a/mingw32-headers.spec b/mingw32-headers.spec
index bd4f6e4..0cdb9bd 100644
--- a/mingw32-headers.spec
+++ b/mingw32-headers.spec
@@ -15,9 +15,10 @@
 # Please submit bugfixes or comments via http://bugs.opensuse.org/
 #
 
+%define snapshot -r6638
 
 Name:           mingw32-headers
-Version:        3.1.0
+Version:        3.1.99
 Release:        0
 Summary:        MinGW-w64 headers for Win32 and Win64
 License:        SUSE-Public-Domain
@@ -25,7 +26,7 @@ Group:          Development/Libraries/C and C++
 Url:            http://mingw-w64.sf.net/
 
 # Generated from downloadable mingw-w64-%version.tar.bz2
-Source:         mingw-w64-headers-%version.tar.xz
+Source:         mingw-w64-headers-%version%{snapshot}.tar.xz
 BuildRoot:      %{_tmppath}/%{name}-%{version}-build
 BuildArch:      noarch
 BuildRequires:  mingw32-filesystem