diff --git a/.gitignore b/.gitignore
index 16379ff..792df4e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,3 +5,4 @@
 /tkrzw-0.9.16.tar.gz
 /tkrzw-1.0.13.tar.gz
 /tkrzw-1.0.17.tar.gz
+/tkrzw-1.0.20.tar.gz
diff --git a/sources b/sources
index b18e4ae..5fc62db 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (tkrzw-1.0.17.tar.gz) = 028894507caf036f1333c8224908c6cd533b80b6ce5ec27eca353f9bda1cc29780001df1b57f605c90a2803835317ea1593cdec5d080f1ffabe991bf610ad668
+SHA512 (tkrzw-1.0.20.tar.gz) = efa198b3b91e2959bd133ce431b7009aece28a8f8443f5d1a447b6ade5ad44214d76d2b7c4f88c57ed6f3583eb108b168ed43b005ebe145080c30308dc6a99fd
diff --git a/tkrzw.spec b/tkrzw.spec
index 6259fb2..a8525f7 100644
--- a/tkrzw.spec
+++ b/tkrzw.spec
@@ -1,8 +1,8 @@
 %global _lto_cflags %{nil}
-%global _lib_min_ver 60
+%global _lib_min_ver 63
 
 Name:		tkrzw
-Version:	1.0.17
+Version:	1.0.20
 Release:	1%{?dist}
 Summary:	A straightforward implementation of DBM
 License:	ASL 2.0
@@ -100,6 +100,9 @@ install -t %{buildroot}%{_mandir}/man1 -m 0644 -p tkrzw_*.1
 
 
 %changelog
+* Thu Nov 18 2021 TI_Eugene <ti.eugene@gmail.com> - 1.0.20-1
+- Version bump
+
 * Fri Oct 08 2021 TI_Eugene <ti.eugene@gmail.com> - 1.0.17-1
 - Version bump
 - ppc64le enabled back