diff --git a/etc/omero.properties b/etc/omero.properties
index 79fe10a37c9..fbca6d38c94 100644
--- a/etc/omero.properties
+++ b/etc/omero.properties
@@ -208,9 +208,9 @@ versions.omero-scripts-url=${versions.omero-pypi}
 ###
 
 ## Internal dependencies
-versions.omero-blitz=5.7.2
-versions.omero-common-test=5.6.4
-versions.omero-gateway=5.9.0
+versions.omero-blitz=5.7.3
+versions.omero-common-test=5.6.5
+versions.omero-gateway=5.9.1
 versions.omero-scripts=5.8.2
 versions.OMEZarrReader=0.3.1
 ## Global overrides, if empty ignored
diff --git a/history.rst b/history.rst
index d72af5f5b04..8e45116da7f 100644
--- a/history.rst
+++ b/history.rst
@@ -5,6 +5,32 @@
 OMERO version history
 =====================
 
+5.6.11 (May 2024)
+-----------------
+
+This release includes the following upgrade of the OMERO.server Java components:
+
+- omero-gateway-java 5.9.1
+- omero-blitz 5.7.3
+- omero-server 5.6.11
+- omero-renderer 5.5.16
+- omero-romio 5.7.6
+- omero-common 5.6.5
+- omero-model 5.6.14
+
+
+Improvements include:
+
+- an upgrade of Bio-Formats to version 7.3.0
+
+**Note:** This upgrade will invalidate the Bio-Formats Memoizer cache. Please
+see the upgrade guide for further information.
+
+This version of the OMERO.server has been tested with:
+
+- OMERO.py 5.19.2
+- OMERO.web 5.25.0
+
 5.6.10 (December 2023)
 ----------------------