diff --git a/docs/simplesamlphp-changelog.md b/docs/simplesamlphp-changelog.md
index 675cb9a8d0a6247d58f62d0740d876f5f2f2fbb6..019956b4441b61669036835907c6458d30fc8a48 100644
--- a/docs/simplesamlphp-changelog.md
+++ b/docs/simplesamlphp-changelog.md
@@ -33,6 +33,7 @@ Released TBD
   * The minimum PHP version required is now 5.6.
 
 ### Deprecation
+  * Support for SAML1.1 / Shibboleth 1.3 will be discontinued in a future release
   * The class SimpleSAML\Auth\TimeLimitedToken is now deprecated and will be removed in a future release
     If your custom module relies on this class, be sure to make a copy into your repository and
     make sure to also copy the unit tests that come along.
diff --git a/lib/SimpleSAML/Bindings/Shib13/Artifact.php b/lib/SimpleSAML/Bindings/Shib13/Artifact.php
index 839271f62b7f7d12f5f7f40d56e636b430adc4b4..09703ec99d15dc3dd0dddfc1645d1de38858f555 100644
--- a/lib/SimpleSAML/Bindings/Shib13/Artifact.php
+++ b/lib/SimpleSAML/Bindings/Shib13/Artifact.php
@@ -4,6 +4,7 @@
  * Implementation of the Shibboleth 1.3 Artifact binding.
  *
  * @package SimpleSAMLphp
+ * @deprecated This class will be removed in a future release
  */
 
 namespace SimpleSAML\Bindings\Shib13;
diff --git a/lib/SimpleSAML/Bindings/Shib13/HTTPPost.php b/lib/SimpleSAML/Bindings/Shib13/HTTPPost.php
index b98f34c3e089063d283f4ed7cc56c90d4ad49afa..d7c38700a9e96abb1824a7d4c726a7fcd87b6434 100644
--- a/lib/SimpleSAML/Bindings/Shib13/HTTPPost.php
+++ b/lib/SimpleSAML/Bindings/Shib13/HTTPPost.php
@@ -6,6 +6,7 @@
  *
  * @author Andreas Ă…kre Solberg, UNINETT AS. <andreas.solberg@uninett.no>
  * @package SimpleSAMLphp
+ * @deprecated This class will be removed in a future release
  */
 
 namespace SimpleSAML\Bindings\Shib13;
diff --git a/lib/SimpleSAML/XML/Shib13/AuthnRequest.php b/lib/SimpleSAML/XML/Shib13/AuthnRequest.php
index 942dabb38a857593fc78de5a88092f245597f9ed..4289a82deb0bbfb87f247883fb1a7477b293675c 100644
--- a/lib/SimpleSAML/XML/Shib13/AuthnRequest.php
+++ b/lib/SimpleSAML/XML/Shib13/AuthnRequest.php
@@ -6,6 +6,7 @@
  *
  * @author Andreas Ă…kre Solberg, UNINETT AS. <andreas.solberg@uninett.no>
  * @package SimpleSAMLphp
+ * @deprecated This class will be removed in a future release
  */
 
 namespace SimpleSAML\XML\Shib13;
diff --git a/lib/SimpleSAML/XML/Shib13/AuthnResponse.php b/lib/SimpleSAML/XML/Shib13/AuthnResponse.php
index 9148c386913c80c01a1b2e4e867c01bc3f2c1f91..69b798f544fd47c90de41a94ac317b23fa197c75 100644
--- a/lib/SimpleSAML/XML/Shib13/AuthnResponse.php
+++ b/lib/SimpleSAML/XML/Shib13/AuthnResponse.php
@@ -5,6 +5,7 @@
  *
  * @author Andreas Ă…kre Solberg, UNINETT AS. <andreas.solberg@uninett.no>
  * @package SimpleSAMLphp
+ * @deprecated This class will be removed in a future release
  */
 
 namespace SimpleSAML\XML\Shib13;
diff --git a/modules/saml/lib/IdP/SAML1.php b/modules/saml/lib/IdP/SAML1.php
index 0cb5cf5eac1d3c6eddfdad0d9737e1baab5584e6..d0a3d8c9ace90abc1afef4cb6c24de88c8869b55 100644
--- a/modules/saml/lib/IdP/SAML1.php
+++ b/modules/saml/lib/IdP/SAML1.php
@@ -17,6 +17,7 @@ use SimpleSAML\XML\Shib13\AuthnResponse;
  * IdP implementation for SAML 1.1 protocol.
  *
  * @package SimpleSAMLphp
+ * @deprecated This class will be removed in a future release
  */
 class SAML1
 {
diff --git a/tests/lib/SimpleSAML/XML/Shib13/AuthnResponseTest.php b/tests/lib/SimpleSAML/XML/Shib13/AuthnResponseTest.php
index 764b2f3505b607f322f3282ae43a14e8dd66e24c..75f992f620c9d27e3ac6c21f7945ccfae976c824 100644
--- a/tests/lib/SimpleSAML/XML/Shib13/AuthnResponseTest.php
+++ b/tests/lib/SimpleSAML/XML/Shib13/AuthnResponseTest.php
@@ -6,6 +6,7 @@
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
+ * @deprecated This class will be removed in a future release
  */