diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2a1a60169..31c1e80a5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -165,6 +165,8 @@ Update allowed classification fields to 2020-01-28 version (#1409, #1476).
 
 ### Known issues
 - ParserBot: erroneous raw line recovery in error handling (#1850).
+- ruamel.yaml loader and dumper: human readability bug / support for comments (#2003).
+- load_configuration does not support JSON files with tab whitespace because of ruamel loader (#1999).
 
 
 2.3.3 (2021-05-31)
diff --git a/debian/changelog b/debian/changelog
index c1b9cbf54..1c239cd2c 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,9 @@
+intelmq (3.0.0~rc1-1) stable; urgency=low
+
+  * Update to 3.0.0 Release candidate 1.
+
+ -- Sebastian Wagner <wagner@cert.at>  Sat, 26 Jun 2021 12:19:51 +0200
+
 intelmq (3.0.0~beta1-1) unstable; urgency=low
 
   * Update to 3.0.0 Beta 1.
diff --git a/docs/user/installation.rst b/docs/user/installation.rst
index d0e3de62e..7f2197d70 100644
--- a/docs/user/installation.rst
+++ b/docs/user/installation.rst
@@ -75,7 +75,7 @@ Optional dependencies:
     dnf install bash-completion jq
     dnf install python3-psycopg2 python3-pymongo
 
-openSUSE 15.1 / 15.2
+openSUSE 15.2 / 15.3
 ^^^^^^^^^^^^^^^^^^^^
 
 .. code-block:: bash
diff --git a/intelmq/version.py b/intelmq/version.py
index 8a70df88b..14c1f9ace 100644
--- a/intelmq/version.py
+++ b/intelmq/version.py
@@ -2,5 +2,5 @@
 #
 # SPDX-License-Identifier: AGPL-3.0-or-later
 
-__version_info__ = (3, 0, 0, 'beta', 1)
+__version_info__ = (3, 0, 0, 'rc', 1)
 __version__ = '.'.join(map(str, __version_info__))