diff --git a/CMakeLists.txt b/CMakeLists.txt
index 20a610b9..71d68676 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2,7 +2,7 @@ cmake_minimum_required (VERSION 3.5)
 project (cint C)
 set(cint_VERSION_MAJOR "6")
 set(cint_VERSION_MINOR "1")
-set(cint_VERSION_PATCH "0")
+set(cint_VERSION_PATCH "1")
 set(cint_VERSION_TWEAK "0")
 set(cint_VERSION "${cint_VERSION_MAJOR}.${cint_VERSION_MINOR}.${cint_VERSION_PATCH}")
 set(cint_SOVERSION "${cint_VERSION_MAJOR}")
diff --git a/ChangeLog b/ChangeLog
index 3fe6232b..c32ad295 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,6 @@
+Version 6.1.1 (2024-01-24):
+	* Explicit SSE3 instructions for int2e
+
 Version 6.1.0 (2023-11-10):
 	* New second order derivative integrals int1e_grids_ipip
 
diff --git a/README.rst b/README.rst
index fd953f4b..ed06f66d 100644
--- a/README.rst
+++ b/README.rst
@@ -1,8 +1,8 @@
 libcint
 =======
 
-version 6.1.0
-2023-11-10
+version 6.1.1
+2024-01-24
 
 
 What is libcint