diff --git a/MimeTypeMap.cs b/MimeTypeMap.cs
index e2ddc7a..1f7af64 100644
--- a/MimeTypeMap.cs
+++ b/MimeTypeMap.cs
@@ -70,6 +70,7 @@ private static IDictionary<string, string> BuildMappings()
                 {".aiff", "audio/aiff"},
                 {".air", "application/vnd.adobe.air-application-installer-package+zip"},
                 {".amc", "application/mpeg"},
+                {".amr", "audio/amr"},
                 {".anx", "application/annodex"},
                 {".apk", "application/vnd.android.package-archive"},
                 {".apng", "image/apng"},
@@ -403,6 +404,7 @@ private static IDictionary<string, string> BuildMappings()
                 {".pict", "image/pict"},
                 {".pkgdef", "text/plain"},
                 {".pkgundef", "text/plain"},
+                {".pkpass", "application/vnd.apple.pkpass"},
                 {".pko", "application/vnd.ms-pki.pko"},
                 {".pls", "audio/scpls"},
                 {".pma", "application/x-perfmon"},
@@ -477,6 +479,7 @@ private static IDictionary<string, string> BuildMappings()
                 {".scr", "text/plain"},
                 {".sct", "text/scriptlet"},
                 {".sd2", "audio/x-sd2"},
+                {".sdoc", "application/sdoc"},
                 {".sdp", "application/sdp"},
                 {".sea", "application/octet-stream"},
                 {".searchConnector-ms", "application/windows-search-connector+xml"},
@@ -709,6 +712,7 @@ private static IDictionary<string, string> BuildMappings()
                 {"image/x-quicktime", ".qti"},
                 {"message/rfc822", ".eml"},
                 {"text/calendar", ".ics"},
+                {"text/comma-separated-values", ".csv"},
                 {"text/html", ".html"},
                 {"text/plain", ".txt"},
                 {"text/scriptlet", ".wsc"},