diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index ca6d200..4ad62c1 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -34,6 +34,7 @@ jobs:
               libio-socket-inet6-perl \
               libio-socket-ip-perl \
               libplack-perl \
+              libtest-mockmodule-perl \
               libtest-tcp-perl \
               libtest-warnings-perl \
               liburi-perl \
@@ -113,6 +114,7 @@ jobs:
               perl-HTTP-Daemon-SSL \
               perl-IO-Socket-INET6 \
               perl-Plack \
+              perl-Test-MockModule \
               perl-Test-TCP \
               perl-Test-Warnings \
               ;
diff --git a/configure.ac b/configure.ac
index 33b88fd..e0dc09a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -68,6 +68,7 @@ m4_foreach_w([_m], [
     HTTP::Response
     IO::Socket::IP
     Scalar::Util
+    Test::MockModule
     Test::TCP
     Test::Warnings
     Time::HiRes