diff --git a/README-CHANGES.xml b/README-CHANGES.xml
index 0bbffce..3f216dc 100644
--- a/README-CHANGES.xml
+++ b/README-CHANGES.xml
@@ -34,14 +34,14 @@
         <c:change date="2021-06-27T00:00:00+00:00" summary="Fix a schema bug that rejected valid footnotes in documents"/>
       </c:changes>
     </c:release>
-    <c:release date="2022-02-03T22:13:27+00:00" is-open="true" ticket-system="com.github.io7m.xstructural" version="1.4.0">
+    <c:release date="2022-02-03T22:22:51+00:00" is-open="false" ticket-system="com.github.io7m.xstructural" version="1.4.0">
       <c:changes>
         <c:change date="2022-02-03T00:00:00+00:00" summary="Fix a bug where documents with comments would be rejected">
           <c:tickets>
             <c:ticket id="18"/>
           </c:tickets>
         </c:change>
-        <c:change date="2022-02-03T22:13:27+00:00" summary="Ensure existing files are replaced when producing EPUBs">
+        <c:change date="2022-02-03T00:00:00+00:00" summary="Ensure existing files are replaced when producing EPUBs">
           <c:tickets>
             <c:ticket id="20"/>
           </c:tickets>
diff --git a/com.io7m.xstructural.api/pom.xml b/com.io7m.xstructural.api/pom.xml
index 3b92152..927b242 100644
--- a/com.io7m.xstructural.api/pom.xml
+++ b/com.io7m.xstructural.api/pom.xml
@@ -9,7 +9,7 @@
   <parent>
     <artifactId>com.io7m.xstructural</artifactId>
     <groupId>com.io7m.xstructural</groupId>
-    <version>1.4.0-SNAPSHOT</version>
+    <version>1.4.0</version>
   </parent>
 
   <artifactId>com.io7m.xstructural.api</artifactId>
diff --git a/com.io7m.xstructural.cmdline/pom.xml b/com.io7m.xstructural.cmdline/pom.xml
index 5645fd4..d4f8be3 100644
--- a/com.io7m.xstructural.cmdline/pom.xml
+++ b/com.io7m.xstructural.cmdline/pom.xml
@@ -9,7 +9,7 @@
   <parent>
     <artifactId>com.io7m.xstructural</artifactId>
     <groupId>com.io7m.xstructural</groupId>
-    <version>1.4.0-SNAPSHOT</version>
+    <version>1.4.0</version>
   </parent>
 
   <artifactId>com.io7m.xstructural.cmdline</artifactId>
diff --git a/com.io7m.xstructural.documentation/pom.xml b/com.io7m.xstructural.documentation/pom.xml
index 464e5d5..e160ec6 100644
--- a/com.io7m.xstructural.documentation/pom.xml
+++ b/com.io7m.xstructural.documentation/pom.xml
@@ -9,7 +9,7 @@
   <parent>
     <artifactId>com.io7m.xstructural</artifactId>
     <groupId>com.io7m.xstructural</groupId>
-    <version>1.4.0-SNAPSHOT</version>
+    <version>1.4.0</version>
   </parent>
 
   <artifactId>com.io7m.xstructural.documentation</artifactId>
diff --git a/com.io7m.xstructural.tests/pom.xml b/com.io7m.xstructural.tests/pom.xml
index 8c8450e..dd5a7d5 100644
--- a/com.io7m.xstructural.tests/pom.xml
+++ b/com.io7m.xstructural.tests/pom.xml
@@ -8,7 +8,7 @@
   <parent>
     <artifactId>com.io7m.xstructural</artifactId>
     <groupId>com.io7m.xstructural</groupId>
-    <version>1.4.0-SNAPSHOT</version>
+    <version>1.4.0</version>
   </parent>
 
   <artifactId>com.io7m.xstructural.tests</artifactId>
diff --git a/com.io7m.xstructural.vanilla/pom.xml b/com.io7m.xstructural.vanilla/pom.xml
index 622021f..a457872 100644
--- a/com.io7m.xstructural.vanilla/pom.xml
+++ b/com.io7m.xstructural.vanilla/pom.xml
@@ -9,7 +9,7 @@
   <parent>
     <artifactId>com.io7m.xstructural</artifactId>
     <groupId>com.io7m.xstructural</groupId>
-    <version>1.4.0-SNAPSHOT</version>
+    <version>1.4.0</version>
   </parent>
 
   <artifactId>com.io7m.xstructural.vanilla</artifactId>
diff --git a/com.io7m.xstructural.xml/pom.xml b/com.io7m.xstructural.xml/pom.xml
index c92cdad..574fc9c 100644
--- a/com.io7m.xstructural.xml/pom.xml
+++ b/com.io7m.xstructural.xml/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>com.io7m.xstructural</groupId>
     <artifactId>com.io7m.xstructural</artifactId>
-    <version>1.4.0-SNAPSHOT</version>
+    <version>1.4.0</version>
   </parent>
 
   <artifactId>com.io7m.xstructural.xml</artifactId>
diff --git a/pom.xml b/pom.xml
index 6c7a747..e01b6af 100644
--- a/pom.xml
+++ b/pom.xml
@@ -11,7 +11,7 @@
 
   <groupId>com.io7m.xstructural</groupId>
   <artifactId>com.io7m.xstructural</artifactId>
-  <version>1.4.0-SNAPSHOT</version>
+  <version>1.4.0</version>
   <packaging>pom</packaging>
 
   <description>Structural document format</description>
@@ -29,7 +29,7 @@
 
   <properties>
     <com.io7m.immutables.version>2.8.8</com.io7m.immutables.version>
-    <io7m.api.previousVersion>1.2.0</io7m.api.previousVersion>
+    <io7m.api.previousVersion>1.3.0</io7m.api.previousVersion>
     <junit.version>5.7.0</junit.version>
   </properties>