diff --git a/CHANGELOG.md b/CHANGELOG.md
index 91d1d82..a75a9a4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,8 +1,8 @@
 CHANGELOG
 =========
 
-In Development
---------------
+v0.53 (April 12, 2021)
+----------------------
 
 Software updates:
 
diff --git a/README.md b/README.md
index 02445a2..2813ed7 100644
--- a/README.md
+++ b/README.md
@@ -58,7 +58,7 @@ Clone this repository and checkout the tag corresponding to the most recent rele
 
 	$ git clone https://github.com/mail-in-a-box/mailinabox
 	$ cd mailinabox
-	$ git checkout v0.52
+	$ git checkout v0.53
 
 Begin the installation.
 
diff --git a/setup/bootstrap.sh b/setup/bootstrap.sh
index 79c7d38..d804cad 100644
--- a/setup/bootstrap.sh
+++ b/setup/bootstrap.sh
@@ -20,7 +20,7 @@ if [ -z "$TAG" ]; then
 	# want to display in status checks.
 	if [ "`lsb_release -d | sed 's/.*:\s*//' | sed 's/18\.04\.[0-9]/18.04/' `" == "Ubuntu 18.04 LTS" ]; then
 		# This machine is running Ubuntu 18.04.
-		TAG=v0.52
+		TAG=v0.53
 
 	elif [ "`lsb_release -d | sed 's/.*:\s*//' | sed 's/14\.04\.[0-9]/14.04/' `" == "Ubuntu 14.04 LTS" ]; then
 		# This machine is running Ubuntu 14.04.