diff --git a/sources b/sources
index bec2393..666ac2c 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (x86-simd-sort-7.0.tar.gz) = de217d35a98da3b269454eaa8a2880b9aa36e4906670d0434799a45a8dcbe6d3fdf56cb16b683be510e34e0636b035e9de88a7b6e68b41e1eecceb5ecac4fe4a
+SHA512 (x86-simd-sort-4.0.tar.gz) = 2e95f026515f5616a43dfdb8d2b6a0e6da3027b74bb8e21db5f7db6710cb7bf290ab147a117093fd7bfba66de6c4c0fcfde16fbe8278bd4966031662bff34ba8
diff --git a/x86-simd-sort.spec b/x86-simd-sort.spec
index 30539f9..05969f7 100644
--- a/x86-simd-sort.spec
+++ b/x86-simd-sort.spec
@@ -1,5 +1,5 @@
 Name:		x86-simd-sort
-Version:	7.0
+Version:	4.0
 Release:	%autorelease
 Summary:	C++ template library for high performance SIMD based sorting algorithms
 
@@ -44,7 +44,7 @@ applications that use %{name}.
 %files
 %license LICENSE.md
 %doc README.md
-%{_libdir}/libx86simdsortcpp.so.1
+%{_libdir}/libx86simdsortcpp.so.0
 
 %files devel
 %{_includedir}/x86simdsort.h