diff --git a/ci/mysql57.sh b/ci/mysql57.sh
index 6f12cc1e..8c892831 100644
--- a/ci/mysql57.sh
+++ b/ci/mysql57.sh
@@ -7,6 +7,7 @@ rm -fr /etc/mysql
 rm -fr /var/lib/mysql
 apt-key add support/5072E1F5.asc # old signing key
 apt-key add support/3A79BD29.asc # 5.7.37 and higher
+apt-key adv --keyserver keyserver.ubuntu.com --recv-keys B7B3B788A8D3785C
 # Verify the repository as add-apt-repository does not.
 wget -q --spider http://repo.mysql.com/apt/ubuntu/dists/$(lsb_release -cs)/mysql-5.7
 add-apt-repository 'http://repo.mysql.com/apt/ubuntu mysql-5.7'
diff --git a/ci/mysql80.sh b/ci/mysql80.sh
index c9c2d529..ae7e8831 100644
--- a/ci/mysql80.sh
+++ b/ci/mysql80.sh
@@ -7,6 +7,7 @@ rm -fr /etc/mysql
 rm -fr /var/lib/mysql
 apt-key add support/5072E1F5.asc # old signing key
 apt-key add support/3A79BD29.asc # 8.0.28 and higher
+apt-key adv --keyserver keyserver.ubuntu.com --recv-keys B7B3B788A8D3785C
 # Verify the repository as add-apt-repository does not.
 wget -q --spider http://repo.mysql.com/apt/ubuntu/dists/$(lsb_release -cs)/mysql-8.0
 add-apt-repository 'http://repo.mysql.com/apt/ubuntu mysql-8.0'