diff --git a/eigen/eigen.spec b/eigen/eigen.spec
index 84403bb61b..2de7bae08f 100644
--- a/eigen/eigen.spec
+++ b/eigen/eigen.spec
@@ -22,8 +22,8 @@
 ##
 
 #   package version
-%define       V_base   3.3.9
-%define       V_subdir 0fd6b4f71dd85b2009ee4d1aeb296e2c11fc9d68
+%define       V_base   3.4.0
+%define       V_subdir 3147391d946bb4b6c68edd901f2add6ac1f31f8c
 
 #   package information
 Name:         eigen
@@ -36,7 +36,7 @@ Class:        EVAL
 Group:        Algorithm
 License:      MPL/LGPL
 Version:      %{V_base}
-Release:      20201205
+Release:      20210828
 
 #   list of sources
 Source0:      https://gitlab.com/libeigen/eigen/-/archive/%{V_base}/%{V_base}.tar.bz2