diff --git a/apps/arranger/arranger/__init__.py b/apps/arranger/arranger/__init__.py
index f2e9098a..b7bcf2cc 100644
--- a/apps/arranger/arranger/__init__.py
+++ b/apps/arranger/arranger/__init__.py
@@ -1,4 +1,4 @@
-VERSION = "0.5.12"
+VERSION = "0.5.13"
 
 
 def run_pytest():
diff --git a/apps/arranger/docs/index.rst b/apps/arranger/docs/index.rst
index 99b4924e..b2d792e1 100644
--- a/apps/arranger/docs/index.rst
+++ b/apps/arranger/docs/index.rst
@@ -49,6 +49,11 @@ Once the tiles are given their correct positions, photons can be used to run
 Changelog
 ---------
 
+.. _release-arranger-0-5-13:
+
+0.5.13 - 28 March 2021
+    * Upgrade Photons and implement more graceful shutdown
+
 .. _release-arranger-0-5-12:
 
 0.5.12 - 15 March 2021
diff --git a/apps/arranger/setup.py b/apps/arranger/setup.py
index d162f3b7..20a940d2 100644
--- a/apps/arranger/setup.py
+++ b/apps/arranger/setup.py
@@ -13,7 +13,7 @@
     , python_requires = ">= 3.6"
 
     , install_requires =
-      [ "lifx-photons-core>=0.33.0"
+      [ "lifx-photons-core>=0.40.0"
       , "tornado>=5.1.1"
       , "whirlwind-web>=0.11.0"
       ]
diff --git a/apps/interactor/docs/changelog.rst b/apps/interactor/docs/changelog.rst
index e689041b..5572f89a 100644
--- a/apps/interactor/docs/changelog.rst
+++ b/apps/interactor/docs/changelog.rst
@@ -3,6 +3,11 @@
 Changelog
 =========
 
+.. _release-interactor-0-8-3:
+
+0.8.3 - 28 March 2021
+    * Update Photons and implement more graceful shutdown
+
 .. _release-interactor-0-8-2:
 
 0.8.2 - 15 March 2021
diff --git a/apps/interactor/docs/docker.rst b/apps/interactor/docs/docker.rst
index 816c89ad..fdaade28 100644
--- a/apps/interactor/docs/docker.rst
+++ b/apps/interactor/docs/docker.rst
@@ -18,7 +18,7 @@ The following may be used::
         --net=host \
         -e TZ=Australia/Melbourne \
         -v $PWD/configdir:/project/config \
-        delfick/lifx-photons-interactor:0.8.1
+        delfick/lifx-photons-interactor:0.8.3
 
 Replace ``Australia/Melbourne`` with the appropriate
 `TZ database name <https://en.wikipedia.org/wiki/List_of_tz_database_time_zones>`_.
diff --git a/apps/interactor/interactor/__init__.py b/apps/interactor/interactor/__init__.py
index 031338cc..70ef9b54 100644
--- a/apps/interactor/interactor/__init__.py
+++ b/apps/interactor/interactor/__init__.py
@@ -1,4 +1,4 @@
-VERSION = "0.8.2"
+VERSION = "0.8.3"
 
 
 def run_pytest():
diff --git a/apps/interactor/setup.py b/apps/interactor/setup.py
index faaf084a..9da78ed9 100644
--- a/apps/interactor/setup.py
+++ b/apps/interactor/setup.py
@@ -13,7 +13,7 @@
     , python_requires = ">= 3.6"
 
     , install_requires =
-      [ "lifx-photons-core>=0.33.0"
+      [ "lifx-photons-core>=0.40.0"
       , "tornado>=6.1"
       , "SQLAlchemy==1.3.3"
       , "alembic==1.3.2"
diff --git a/docs/start/changelog.rst b/docs/start/changelog.rst
index a1001061..03e8d081 100644
--- a/docs/start/changelog.rst
+++ b/docs/start/changelog.rst
@@ -5,7 +5,7 @@ ChangeLog
 
 .. _release-core-0-40-0:
 
-0.40.0 - TBD
+0.40.0 - 28 March 2021
     * ``photons_app.actions.an_action`` has been replaced with
       ``photons_app.tasks.task_register`` and a new class based way of defining
       tasks. New documentation for this new infrastructure can be found at
diff --git a/modules/photons_app/__init__.py b/modules/photons_app/__init__.py
index 1db407ca..28a9a14e 100644
--- a/modules/photons_app/__init__.py
+++ b/modules/photons_app/__init__.py
@@ -1 +1 @@
-VERSION = "0.33.0"
+VERSION = "0.40.0"