diff --git a/.gitignore b/.gitignore
index ede6c3e8f3..69f93652be 100644
--- a/.gitignore
+++ b/.gitignore
@@ -49,6 +49,7 @@
 /vagrant/phpbb-install-config.yml
 .vagrant
 node_modules
+/build/package_signature
 
 # Excludes IDE / editors files
 *~
diff --git a/build/build.xml b/build/build.xml
index ddc1e0464e..0334bd6c2f 100644
--- a/build/build.xml
+++ b/build/build.xml
@@ -203,6 +203,10 @@
 		<phingcall target="checksum-dir">
 			<property name="dir" value="build/new_version/release_files" />
 		</phingcall>
+
+		<phingcall target="sign-packages">
+			<property name="dir" value="build/new_version/release_files" />
+		</phingcall>
 	</target>
 
 	<target name="checksum-dir">
@@ -219,6 +223,31 @@
 		<exec dir="${dir}" command="sha256sum ${filename} > ${filename}.sha256" />
 	</target>
 
+	<target name="sign-packages">
+		<property name="packageSignatureExists" value="false" />
+		<exec command="if [ -f 'build/package_signature' ]; then echo 'true'; else echo 'false'; fi;" outputProperty="packageSignatureExists" />
+		<if>
+			<equals arg1="${packageSignatureExists}" arg2="true" />
+			<then>
+				<foreach param="filename" absparam="absfilename" target="sign-file">
+					<fileset dir="${dir}">
+						<type type="file" />
+						<include name="*.tar.bz2"/>
+						<include name="*.zip"/>
+					</fileset>
+				</foreach>
+			</then>
+			<else>
+				<echo msg="Skipping signing of packages due to missing build/package_signature"/>
+			</else>
+		</if>
+	</target>
+
+	<target name="sign-file">
+		<echo msg="Creating signature file for ${absfilename}" />
+		<exec command="php build/generate_signature.php `cat build/package_signature` ${absfilename}" />
+	</target>
+
 	<target name="announcement" depends="prepare">
 		<echo msg="Writing download links and checksums for email announcement to save/announcement_email_${newversion}.txt" />
 		<exec dir="build" escape="false"