diff --git a/home/xdg/default.nix b/home/xdg/default.nix
index 9412134..fbd1711 100644
--- a/home/xdg/default.nix
+++ b/home/xdg/default.nix
@@ -8,8 +8,11 @@
         "image/svg+xml" = ["viewnior.desktop"];
         "image/jpeg" = ["viewnior.desktop"];
         "image/png" = ["viewnior.desktop"];
+        "image/tiff" = ["viewnior.desktop"];
+        "video/quicktime" = ["vlc.desktop"]; # *.mov
         "application/yaml" = ["org.x.editor.desktop"];
         "text/plain" = ["org.x.editor.desktop"];
+        "text/calendar" = ["thunderbird.desktop"];
       };
     };
     userDirs.enable = true;
diff --git a/modules/office.nix b/modules/office.nix
index a9d2f2d..ef1911f 100644
--- a/modules/office.nix
+++ b/modules/office.nix
@@ -9,6 +9,8 @@
     hunspellDicts.en_US hyphenDicts.en_US
     hunspellDicts.de_DE hyphenDicts.de_DE
 
+    pdfarranger
+
     xournalpp
 
     system-config-printer