diff --git a/pkgs/applications/networking/mailreaders/sylpheed/default.nix b/pkgs/applications/networking/mailreaders/sylpheed/default.nix
index 48a212b4ffb..9a65bec21c2 100644
--- a/pkgs/applications/networking/mailreaders/sylpheed/default.nix
+++ b/pkgs/applications/networking/mailreaders/sylpheed/default.nix
@@ -1,5 +1,5 @@
 { lib, stdenv, fetchurl, pkg-config, gtk2, openssl ? null, gpgme ? null
-, gpgSupport ? true, sslSupport ? true }:
+, gpgSupport ? true, sslSupport ? true, fetchpatch }:
 
 assert gpgSupport -> gpgme != null;
 assert sslSupport -> openssl != null;
@@ -15,6 +15,17 @@ stdenv.mkDerivation rec {
     sha256 = "0j9y5vdzch251s264diw9clrn88dn20bqqkwfmis9l7m8vmwasqd";
   };
 
+  patches = [
+    (fetchpatch {
+      # patch upstream bug https://sylpheed.sraoss.jp/redmine/issues/306
+      name = "patch-libsylph_ssl_c.patch";
+      url = "https://cvsweb.openbsd.org/cgi-bin/cvsweb/~checkout~/ports/mail/sylpheed/patches/patch-libsylph_ssl_c?rev=1.4&content-type=text/plain";
+      sha256 = "sha256-k9OwPtHrEjaxXdH0trNqXgJMhR8kjgtei9pi6OFvILk=";
+    })
+  ];
+
+  patchFlags = [ "-p0" ];
+
   nativeBuildInputs = [ pkg-config ];
 
   buildInputs = [ gtk2 ]