diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7181c4c9f4..5f3165baba 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,8 @@
 # Changelog
 
-## 7.3.1 (git master)
+## 7.4.0 (git master)
+* Added support for reading Primavera SureTrak databases from directories, zip files, and STX files.
+* Added support for PP files generated by Asta Powerproject from version 13.0.0.1
 
 ## 7.3.0 (12/03/2018)
 * Added support for reading Primavera P3 databases from directories, zip files, and PRX files.
diff --git a/build.xml b/build.xml
index 5801371909..d7c97e63db 100644
--- a/build.xml
+++ b/build.xml
@@ -9,7 +9,7 @@
 	<target name="init-props" description="Initialize properties">
 		<tstamp />
 
-		<property name="current.version" value="7.3.0" />
+		<property name="current.version" value="7.4.0" />
 		<property name="ikvm.dir" value="${basedir}/../ikvm-8.0.5449.1" />
 		<property name="nuget.dir" value="${basedir}/../nuget" />
 		<property name="ruby.dir" value="C:/Ruby21"/>
diff --git a/maven/pom.xml b/maven/pom.xml
index 55fbeeb17f..316c4097a9 100644
--- a/maven/pom.xml
+++ b/maven/pom.xml
@@ -8,7 +8,7 @@
 	<artifactId>mpxj</artifactId>
 
 	<!-- Note - this is automatically updated by the ant build ... don't remove the MPXJ comment! -->
-	<!-- MPXJ --><version>7.3.0</version>
+	<!-- MPXJ --><version>7.4.0</version>
 
 	<name>MPXJ</name>
 	<url>http://mpxj.org</url>
diff --git a/src.net/MpxjConvert/Properties/AssemblyInfo.cs b/src.net/MpxjConvert/Properties/AssemblyInfo.cs
index 87671d4931..12285baaa4 100644
--- a/src.net/MpxjConvert/Properties/AssemblyInfo.cs
+++ b/src.net/MpxjConvert/Properties/AssemblyInfo.cs
@@ -31,6 +31,6 @@
 //
 // You can specify all the values or you can default the Build and Revision Numbers 
 // by using the '*' as shown below:
-// [assembly: AssemblyVersion("7.3.0.0")]
-[assembly: AssemblyVersion("7.3.0.0")]
-[assembly: AssemblyFileVersion("7.3.0.0")]
+// [assembly: AssemblyVersion("7.4.0.0")]
+[assembly: AssemblyVersion("7.4.0.0")]
+[assembly: AssemblyFileVersion("7.4.0.0")]
diff --git a/src.net/MpxjCreate/MpxjCreate/Properties/AssemblyInfo.cs b/src.net/MpxjCreate/MpxjCreate/Properties/AssemblyInfo.cs
index c253e81bcb..ebbe48c7af 100644
--- a/src.net/MpxjCreate/MpxjCreate/Properties/AssemblyInfo.cs
+++ b/src.net/MpxjCreate/MpxjCreate/Properties/AssemblyInfo.cs
@@ -31,6 +31,6 @@
 //
 // You can specify all the values or you can default the Build and Revision Numbers 
 // by using the '*' as shown below:
-// [assembly: AssemblyVersion("7.3.0.0")]
-[assembly: AssemblyVersion("7.3.0.0")]
-[assembly: AssemblyFileVersion("7.3.0.0")]
+// [assembly: AssemblyVersion("7.4.0.0")]
+[assembly: AssemblyVersion("7.4.0.0")]
+[assembly: AssemblyFileVersion("7.4.0.0")]
diff --git a/src.net/MpxjQuery/Properties/AssemblyInfo.cs b/src.net/MpxjQuery/Properties/AssemblyInfo.cs
index df11254d53..0451c74897 100644
--- a/src.net/MpxjQuery/Properties/AssemblyInfo.cs
+++ b/src.net/MpxjQuery/Properties/AssemblyInfo.cs
@@ -31,6 +31,6 @@
 //
 // You can specify all the values or you can default the Build and Revision Numbers 
 // by using the '*' as shown below:
-// [assembly: AssemblyVersion("7.3.0.0")]
-[assembly: AssemblyVersion("7.3.0.0")]
-[assembly: AssemblyFileVersion("7.3.0.0")]
+// [assembly: AssemblyVersion("7.4.0.0")]
+[assembly: AssemblyVersion("7.4.0.0")]
+[assembly: AssemblyFileVersion("7.4.0.0")]
diff --git a/src.net/MpxjTest/Properties/AssemblyInfo.cs b/src.net/MpxjTest/Properties/AssemblyInfo.cs
index cf9be5b7da..957566f62d 100644
--- a/src.net/MpxjTest/Properties/AssemblyInfo.cs
+++ b/src.net/MpxjTest/Properties/AssemblyInfo.cs
@@ -32,6 +32,6 @@
 //
 // You can specify all the values or you can default the Build and Revision Numbers 
 // by using the '*' as shown below:
-// [assembly: AssemblyVersion("7.3.0.0")]
-[assembly: AssemblyVersion("7.3.0.0")]
-[assembly: AssemblyFileVersion("7.3.0.0")]
+// [assembly: AssemblyVersion("7.4.0.0")]
+[assembly: AssemblyVersion("7.4.0.0")]
+[assembly: AssemblyFileVersion("7.4.0.0")]
diff --git a/src.net/MpxjUtilities/Properties/AssemblyInfo.cs b/src.net/MpxjUtilities/Properties/AssemblyInfo.cs
index 4fb2aa0301..6086de7b1f 100644
--- a/src.net/MpxjUtilities/Properties/AssemblyInfo.cs
+++ b/src.net/MpxjUtilities/Properties/AssemblyInfo.cs
@@ -32,6 +32,6 @@
 //
 // You can specify all the values or you can default the Build and Revision Numbers 
 // by using the '*' as shown below:
-// [assembly: AssemblyVersion("7.3.0.0")]
-[assembly: AssemblyVersion("7.3.0.0")]
-[assembly: AssemblyFileVersion("7.3.0.0")]
+// [assembly: AssemblyVersion("7.4.0.0")]
+[assembly: AssemblyVersion("7.4.0.0")]
+[assembly: AssemblyFileVersion("7.4.0.0")]
diff --git a/src.ruby/mpxj/lib/mpxj/version.rb b/src.ruby/mpxj/lib/mpxj/version.rb
index 996e3bd185..d0277cafb9 100644
--- a/src.ruby/mpxj/lib/mpxj/version.rb
+++ b/src.ruby/mpxj/lib/mpxj/version.rb
@@ -1,5 +1,5 @@
 # MPXJ gem module
 module MPXJ
   # MPXJ gem version number
-  VERSION = "7.3.0"
+  VERSION = "7.4.0"
 end