diff --git a/R/utils-paths.R b/R/utils-paths.R
index 6b1b0f8b0..ec0caeed0 100644
--- a/R/utils-paths.R
+++ b/R/utils-paths.R
@@ -181,6 +181,9 @@ file_ext_safe <- function(x) {
 
 ## add an extension if it is not already present
 apply_extension <- function(path, ext) {
+  if (is.na(ext) || ext == "") {
+    return(path)
+  }
   ext_orig <- file_ext_safe(path)
   if (!identical(ext, ext_orig)) {
     path <- paste(path, ext, sep = ".")
diff --git a/data-raw/extension-mime-type-defaults.csv b/data-raw/extension-mime-type-defaults.csv
index e41a2eb1b..5e927d75c 100644
--- a/data-raw/extension-mime-type-defaults.csv
+++ b/data-raw/extension-mime-type-defaults.csv
@@ -25,4 +25,5 @@ text/csv,csv
 application/vnd.oasis.opendocument.presentation,odp
 text/richtext,rtx
 application/zip,zip
-image/svg+xml,svg
\ No newline at end of file
+image/svg+xml,svg
+text/markdown,md
diff --git a/inst/extdata/data/mime_tbl.csv b/inst/extdata/data/mime_tbl.csv
index 843202072..ffa700657 100644
--- a/inst/extdata/data/mime_tbl.csv
+++ b/inst/extdata/data/mime_tbl.csv
@@ -1,32 +1,37 @@
 mime_type,ext,description,human_type,default
-application/epub+zip,NA,NA,NA,NA
+application/epub+zip,epub,NA,epub,FALSE
 application/msword,doc,NA,doc,TRUE
-application/msword,dot,NA,dot,FALSE
 application/pdf,pdf,NA,pdf,TRUE
 application/rtf,rtf,NA,rtf,TRUE
 application/vnd.google-apps.audio,NA,NA,audio,NA
 application/vnd.google-apps.document,NA,Google Docs,document,NA
-application/vnd.google-apps.drawing,NA,Google Drawing,drawing,NA
-application/vnd.google-apps.drive-sdk,NA,3rd party shortcut,drive-sdk,NA
+application/vnd.google-apps.drawing,NA,Google Drawings,drawing,NA
+application/vnd.google-apps.drive-sdk,NA,Third-party shortcut,drive-sdk,NA
 application/vnd.google-apps.file,NA,Google Drive file,file,NA
 application/vnd.google-apps.folder,NA,Google Drive folder,folder,NA
 application/vnd.google-apps.form,NA,Google Forms,form,NA
 application/vnd.google-apps.fusiontable,NA,Google Fusion Tables,fusiontable,NA
+application/vnd.google-apps.jam,NA,Google Jamboard,jam,NA
+application/vnd.google-apps.mail-layout,NA,Email layout,mail-layout,NA
 application/vnd.google-apps.map,NA,Google My Maps,map,NA
-application/vnd.google-apps.photo,NA,NA,photo,NA
+application/vnd.google-apps.photo,NA,Google Photos,photo,NA
 application/vnd.google-apps.presentation,NA,Google Slides,presentation,NA
-application/vnd.google-apps.script,NA,Google Apps Scripts,script,NA
+application/vnd.google-apps.script,NA,Google Apps Script,script,NA
 application/vnd.google-apps.script+json,NA,NA,script+json,NA
 application/vnd.google-apps.script+text/plain,NA,NA,script+text/plain,NA
 application/vnd.google-apps.shortcut,NA,Shortcut,shortcut,NA
 application/vnd.google-apps.site,NA,Google Sites,site,NA
 application/vnd.google-apps.spreadsheet,NA,Google Sheets,spreadsheet,NA
 application/vnd.google-apps.unknown,NA,NA,unknown,NA
+application/vnd.google-apps.vid,NA,Google Vids,vid,NA
 application/vnd.google-apps.video,NA,NA,video,NA
 application/vnd.google.colab,ipynb,Colab notebook,colab,TRUE
-application/vnd.ms-excel,xlb,NA,xlb,FALSE
+application/vnd.ms-excel,xla,NA,xla,FALSE
+application/vnd.ms-excel,xlc,NA,xlc,FALSE
+application/vnd.ms-excel,xlm,NA,xlm,FALSE
 application/vnd.ms-excel,xls,NA,xls,TRUE
 application/vnd.ms-excel,xlt,NA,xlt,FALSE
+application/vnd.ms-excel,xlw,NA,xlw,FALSE
 application/vnd.ms-excel.sheet.macroenabled.12,NA,NA,NA,NA
 application/vnd.ms-excel.template.macroenabled.12,NA,NA,NA,NA
 application/vnd.ms-powerpoint,pps,NA,pps,FALSE
@@ -52,8 +57,9 @@ application/x-vnd.oasis.opendocument.presentation,NA,NA,NA,NA
 application/x-vnd.oasis.opendocument.spreadsheet,NA,NA,NA,NA
 application/x-vnd.oasis.opendocument.text,NA,NA,NA,NA
 application/zip,zip,NA,zip,TRUE
-image/bmp,NA,NA,NA,NA
+image/bmp,bmp,NA,bmp,FALSE
 image/gif,gif,NA,gif,TRUE
+image/jpeg,jfif,NA,jfif,FALSE
 image/jpeg,jpe,NA,jpe,FALSE
 image/jpeg,jpeg,NA,jpeg,TRUE
 image/jpeg,jpg,NA,jpg,FALSE
@@ -68,12 +74,17 @@ text/csv,csv,NA,csv,TRUE
 text/html,htm,NA,htm,FALSE
 text/html,html,NA,html,TRUE
 text/html,shtml,NA,shtml,FALSE
-text/plain,asc,NA,asc,FALSE
+text/markdown,markdown,NA,markdown,FALSE
+text/markdown,md,NA,md,TRUE
 text/plain,brf,NA,brf,FALSE
 text/plain,pot,NA,pot,FALSE
 text/plain,srt,NA,srt,FALSE
 text/plain,text,NA,text,FALSE
 text/plain,txt,NA,txt,TRUE
-text/richtext,rtx,NA,rtx,TRUE
+text/richtext,NA,NA,NA,NA
 text/rtf,NA,NA,NA,NA
 text/tab-separated-values,tsv,NA,tsv,TRUE
+text/x-markdown,NA,NA,NA,NA
+video/mp4,m4v,NA,m4v,FALSE
+video/mp4,mp4,NA,mp4,FALSE
+video/mp4,mpg4,NA,mpg4,FALSE
diff --git a/inst/extdata/data/translate_mime_types.csv b/inst/extdata/data/translate_mime_types.csv
index 9b388663c..2cc2c6fc3 100644
--- a/inst/extdata/data/translate_mime_types.csv
+++ b/inst/extdata/data/translate_mime_types.csv
@@ -6,13 +6,16 @@ export,application/vnd.google-apps.document,application/vnd.oasis.opendocument.t
 export,application/vnd.google-apps.document,application/vnd.openxmlformats-officedocument.wordprocessingml.document,TRUE
 export,application/vnd.google-apps.document,application/zip,FALSE
 export,application/vnd.google-apps.document,text/html,FALSE
+export,application/vnd.google-apps.document,text/markdown,FALSE
 export,application/vnd.google-apps.document,text/plain,FALSE
+export,application/vnd.google-apps.document,text/x-markdown,FALSE
 export,application/vnd.google-apps.drawing,application/pdf,FALSE
 export,application/vnd.google-apps.drawing,image/jpeg,FALSE
 export,application/vnd.google-apps.drawing,image/png,TRUE
 export,application/vnd.google-apps.drawing,image/svg+xml,FALSE
 export,application/vnd.google-apps.form,application/zip,TRUE
 export,application/vnd.google-apps.jam,application/pdf,FALSE
+export,application/vnd.google-apps.mail-layout,text/plain,FALSE
 export,application/vnd.google-apps.presentation,application/pdf,FALSE
 export,application/vnd.google-apps.presentation,application/vnd.oasis.opendocument.presentation,FALSE
 export,application/vnd.google-apps.presentation,application/vnd.openxmlformats-officedocument.presentationml.presentation,TRUE
@@ -26,6 +29,7 @@ export,application/vnd.google-apps.spreadsheet,application/x-vnd.oasis.opendocum
 export,application/vnd.google-apps.spreadsheet,application/zip,FALSE
 export,application/vnd.google-apps.spreadsheet,text/csv,FALSE
 export,application/vnd.google-apps.spreadsheet,text/tab-separated-values,FALSE
+export,application/vnd.google-apps.vid,video/mp4,FALSE
 import,application/vnd.google-apps.document,application/msword,NA
 import,application/vnd.google-apps.document,application/pdf,NA
 import,application/vnd.google-apps.document,application/rtf,NA
@@ -45,9 +49,11 @@ import,application/vnd.google-apps.document,image/png,NA
 import,application/vnd.google-apps.document,image/x-bmp,NA
 import,application/vnd.google-apps.document,image/x-png,NA
 import,application/vnd.google-apps.document,text/html,NA
+import,application/vnd.google-apps.document,text/markdown,NA
 import,application/vnd.google-apps.document,text/plain,NA
 import,application/vnd.google-apps.document,text/richtext,NA
 import,application/vnd.google-apps.document,text/rtf,NA
+import,application/vnd.google-apps.document,text/x-markdown,NA
 import,application/vnd.google-apps.drawing,application/x-msmetafile,NA
 import,application/vnd.google-apps.presentation,application/vnd.ms-powerpoint,NA
 import,application/vnd.google-apps.presentation,application/vnd.ms-powerpoint.presentation.macroenabled.12,NA
diff --git a/tests/testthat/_snaps/drive_download.md b/tests/testthat/_snaps/drive_download.md
index 34673f94c..67f064088 100644
--- a/tests/testthat/_snaps/drive_download.md
+++ b/tests/testthat/_snaps/drive_download.md
@@ -55,3 +55,13 @@
       Saved locally as:
       * '{download_filename}'
 
+# drive_download() respects `path` when `type` specified and no default extension
+
+    Code
+      write_utf8(drive_download_message)
+    Output
+      File downloaded:
+      * '{file_to_download}' <id: {FILE_ID}>
+      Saved locally as:
+      * '{download_filename}'
+
diff --git a/tests/testthat/test-drive_download.R b/tests/testthat/test-drive_download.R
index 8afed45f7..8afc836b4 100644
--- a/tests/testthat/test-drive_download.R
+++ b/tests/testthat/test-drive_download.R
@@ -147,3 +147,34 @@ test_that("drive_download() converts using default MIME type, if necessary", {
 
   expect_true(file.exists(file.path(tmpdir, download_filename)))
 })
+
+test_that("drive_download() respects `path` when `type` specified and no default extension", {
+  skip_if_no_token()
+  skip_if_offline()
+
+  file_to_download <- nm_("DESC-doc")
+  tmpdir <- withr::local_tempdir(file_to_download)
+  download_filename <- paste0(file_to_download, ".md")
+  local_drive_loud_and_wide()
+
+  drive_download_message <- capture.output(
+    withr::with_dir(
+      tmpdir,
+      drive_download(
+        file = file_to_download,
+        type = "text/x-markdown",
+        path = download_filename
+      )
+    ),
+    type = "message"
+  )
+  drive_download_message <- drive_download_message %>%
+    scrub_filepath(download_filename) %>%
+    scrub_filepath(file_to_download) %>%
+    scrub_file_id()
+  expect_snapshot(
+    write_utf8(drive_download_message)
+  )
+
+  expect_true(file.exists(file.path(tmpdir, download_filename)))
+})