freedesktop.org.xml.in |   14 ++++++++++++++
 1 files changed, 14 insertions(+), 0 deletions(-)

diff --git a/freedesktop.org.xml.in b/freedesktop.org.xml.in
index b1a2724..3019e6b 100644
--- a/freedesktop.org.xml.in
+++ b/freedesktop.org.xml.in
@@ -88,6 +88,20 @@ command to generate the output files.
     <generic-icon name="x-office-document"/>
     <glob pattern="*.ez"/>
   </mime-type>
+  <mime-type type="application/x-chiasmus-encrypted">
+    <_comment>Chiasmus-encrypted data</_comment>
+    <magic priority="50">
+      <match type="string" value="XIA1" offset="0">
+    </magic>
+    <glob pattern="*.xia"/>
+  </mime-type>
+  <mime-type type="application/x-chiasmus-key">
+    <_comment>Chiasmus key</_comment>
+    <magic priority="50">
+      <match type="string" value="XSI" offset="0">
+    </magic>
+    <glob pattern="*.xsi"/>
+  </mime-type>
   <mime-type type="application/epub+zip">
     <_comment>electronic book document</_comment>
     <generic-icon name="x-office-document"/>