diff --git a/macosx.properties b/macosx.properties
index d6e1086d..4c96ed0e 100644
--- a/macosx.properties
+++ b/macosx.properties
@@ -28,6 +28,10 @@ sign.uk.pkcs11Config = ${basedir}/mdx/uk/opensc-mac.cfg
 # For a Yubikey, use this override in build.properties:
 #
 #sign.uk.pkcs11Config = ${basedir}/mdx/uk/yubikey-mac.cfg
+#
+# For the SoftHSMv2 soft token, use this override in build.properties:
+#
+#sign.uk.pkcs11Config = ${basedir}/mdx/uk/softhsm-mac-macports.cfg
 
 #
 # Signing key alias within the keystore.
diff --git a/mdx/uk/softhsm-mac-macports.cfg b/mdx/uk/softhsm-mac-macports.cfg
new file mode 100644
index 00000000..1024d0df
--- /dev/null
+++ b/mdx/uk/softhsm-mac-macports.cfg
@@ -0,0 +1,8 @@
+#
+# PKCS#11 provider configuration for for SoftHSM running under macOS.
+#
+# Note: this configuration assumes that SoftHSM has been installed using
+# the MacPorts system.
+#
+name = SoftHSM
+library = /opt/local/lib/softhsm/libsofthsm2.so