diff --git a/maildrop-3.1.5.tar.bz2 b/maildrop-3.1.5.tar.bz2
deleted file mode 100644
index fba1802..0000000
Binary files a/maildrop-3.1.5.tar.bz2 and /dev/null differ
diff --git a/maildrop-3.1.5.tar.bz2.sig b/maildrop-3.1.5.tar.bz2.sig
deleted file mode 100644
index 571d84c..0000000
Binary files a/maildrop-3.1.5.tar.bz2.sig and /dev/null differ
diff --git a/maildrop-3.1.6.tar.bz2 b/maildrop-3.1.6.tar.bz2
new file mode 100644
index 0000000..ebfd2f2
Binary files /dev/null and b/maildrop-3.1.6.tar.bz2 differ
diff --git a/maildrop.spec b/maildrop.spec
index 324ea90..1862aa0 100644
--- a/maildrop.spec
+++ b/maildrop.spec
@@ -2,13 +2,11 @@
 
 Summary:             Mail delivery agent with filtering abilities
 Name:                maildrop
-Version:             3.1.5
+Version:             3.1.6
 Release:             1
 License:             GPL-3.0-only WITH Classpath-exception-2.0
 URL:                 http://www.courier-mta.org/maildrop/
 Source0:             https://downloads.sourceforge.net/project/courier/%{name}/%{version}/%{name}-%{version}.tar.bz2
-Source1:             https://downloads.sourceforge.net/project/courier/%{name}/%{version}/%{name}-%{version}.tar.bz2.sig
-Source2:             pubkey.maildrop
 
 Requires:            courier-unicode >= 2.1
 BuildRequires:       automake, libtool, autoconf gcc-c++, gdbm-devel, libdb-devel, pcre2-devel gawk
@@ -40,8 +38,6 @@ mail to be lost.
 
 %prep
 %autosetup -p1
-gpg --import %{SOURCE2}
-gpg --verify %{SOURCE1} %{SOURCE0}
 
 %build
 autoreconf -fi
@@ -79,6 +75,9 @@ cp -pr README README.postfix ChangeLog UPGRADE %{buildroot}%{_defaultdocdir}/%{n
 %{_mandir}/man8/*.8*
 
 %changelog
+* Tue Feb 6 2024 liyanan <liyanan61@h-partners.com> - 3.1.6-1
+- Update package to version 3.1.6
+
 * Wed May 10 2023 liyanan <thistleslyn@163.com> - 3.1.5-1
 - Update package to version 3.1.5
 
diff --git a/pubkey.maildrop b/pubkey.maildrop
deleted file mode 100644
index 0a4ae2b..0000000
--- a/pubkey.maildrop
+++ /dev/null
@@ -1,53 +0,0 @@
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