diff --git a/data/Dockerfiles/dovecot/docker-entrypoint.sh b/data/Dockerfiles/dovecot/docker-entrypoint.sh
index 254245b8..f016b02a 100755
--- a/data/Dockerfiles/dovecot/docker-entrypoint.sh
+++ b/data/Dockerfiles/dovecot/docker-entrypoint.sh
@@ -245,7 +245,7 @@ echo "$(envsubst < /usr/local/bin/maildir_gc.sh)" > /usr/local/bin/maildir_gc.sh
 
 PUBKEY_MCRYPT=$(doveconf -P | grep -i mail_crypt_global_public_key | cut -d '<' -f2)
 if [ -f ${PUBKEY_MCRYPT} ]; then
-  GUID=$(cat <(echo ${MAILCOW_HOSTNAME}) /mail_crypt/ecpubkey.pem | grep -v 'PUBLIC KEY' | base64 -d | sha256sum | cut -d ' ' -f1 | tr -cd "[a-fA-F0-9.:/] ")
+  GUID=$(cat <(echo ${MAILCOW_HOSTNAME}) /mail_crypt/ecpubkey.pem | sha256sum | cut -d ' ' -f1 | tr -cd "[a-fA-F0-9.:/] ")
   if [ ${#GUID} -eq 64 ]; then
     mysql --socket=/var/run/mysqld/mysqld.sock -u ${DBUSER} -p${DBPASS} ${DBNAME} << EOF
 REPLACE INTO versions (application, version) VALUES ("GUID", "${GUID}");
diff --git a/docker-compose.yml b/docker-compose.yml
index b944643d..409bfcff 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -174,7 +174,7 @@ services:
             - sogo
 
     dovecot-mailcow:
-      image: mailcow/dovecot:1.84
+      image: mailcow/dovecot:1.85
       build: ./data/Dockerfiles/dovecot
       cap_add:
         - NET_BIND_SERVICE