diff --git a/system-announce b/system-announce
index 19616ed..40299f1 100644
--- a/system-announce
+++ b/system-announce
@@ -1,7 +1,12 @@
 # System announcements:                                   #
 #                                                         #
-# 24-Jan-2018:                                            #
-#   - Security fixes for the Spectre and Meltdown         #
-#   vulnerabilities were deployed on all clusters. Please #
-#   contact us if you encounter any performance issues.   #
+# 14-Mar-2018:                                            #
+#   - A partition for serial jobs is available on Deneb.  #
+#   It can used with: "--partition=serial".               #
+#  3-Apr-2018:                                            #
+#   - Jobs of users with free accounts are limited to 6h. #
+#  9-Jul-2018:                                            #
+#   - All clusters will be unavailable for the Annual     #
+#   maintenance window. A new release of all software     #
+#   modules will be deployed.                             #
 #                                                         #
diff --git a/system-announce.deneb b/system-announce.deneb
deleted file mode 100644
index 4bd6a4b..0000000
--- a/system-announce.deneb
+++ /dev/null
@@ -1,13 +0,0 @@
-# System announcements:                                   #
-#                                                         #
-# 24-Jan-2018:                                            #
-#   - Security fixes for the Spectre and Meltdown         #
-#   vulnerabilities were deployed on all clusters. Please #
-#   contact us if you encounter any performance issues.   #
-# 14-Mar-2018:                                            #
-#   - A new partition for serial jobs is now available on #
-#   Deneb. It can used with: "--partition=serial".        #
-#  3-Apr-2018:                                            #
-#   - Jobs of users with free accounts will be limited to #
-#   6 hours.                                              #
-#                                                         #
diff --git a/system-announce.fidis b/system-announce.fidis
deleted file mode 100644
index f5ec47a..0000000
--- a/system-announce.fidis
+++ /dev/null
@@ -1,10 +0,0 @@
-# System announcements:                                   #
-#                                                         #
-#  3-Apr-2018:                                            #
-#   - Jobs of users with free accounts will be limited to #
-#   6 hours.                                              #
-# 30-May-2018:                                            #
-#   - Fidis will be unavailable from 08:00 to 18:00 for   #
-#   scheduled maintenance. No jobs will be able to run    #
-#   during the maintenance window.                        #
-#                                                         #