diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 2deef1b..10dbc91 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -27,8 +27,6 @@ jobs:
               curl \
               libhttp-daemon-perl \
               libhttp-daemon-ssl-perl \
-              libio-socket-inet6-perl \
-              libio-socket-ip-perl \
               libplack-perl \
               libtest-mockmodule-perl \
               libtest-tcp-perl \
diff --git a/README.md b/README.md
index 2823d8b..7f77d8f 100644
--- a/README.md
+++ b/README.md
@@ -63,7 +63,6 @@ maintained through github.com. Please check out https://ddclient.net
 
   * An account from a supported dynamic DNS service provider
   * Perl v5.10.1 or later
-      * `IO::Socket::SSL` perl library for ssl-support
       * `JSON::PP` perl library for JSON support
   * Linux, macOS, or any other Unix-ish system
   * An implementation of `make` (such as [GNU
diff --git a/configure.ac b/configure.ac
index 945eba0..53dc3b8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -44,7 +44,6 @@ m4_foreach_w([_m], [
     File::Path
     File::Temp
     Getopt::Long
-    IO::Socket::IP
     Socket
     Sys::Hostname
     version=0.77
@@ -72,7 +71,6 @@ m4_foreach_w([_m], [
     HTTP::Message::PSGI
     HTTP::Request
     HTTP::Response
-    IO::Socket::SSL
     Scalar::Util
     Test::MockModule
     Test::TCP