diff --git a/README.md b/README.md
index 51e22c2..aaac96b 100644
--- a/README.md
+++ b/README.md
@@ -317,6 +317,11 @@ The URL from which to download the archive.
 The URL can be generated by a series of commands, for example when you need to parse an xml file for the latest URL. (See `bbedit`, `desktoppr`, or `omnigraffle` for examples.)
 Sometimes version differs between Intel and Apple Silicon versions. (See `brave`,  `obsidian`, `omnidisksweeper`, or `notion`).
 
+- `curlOptions`: (optional)
+Options to the `curl` command, needed for `curl` to be able to download the software.
+Usually used for adding extra headers that some servers need in order to serve the file.
+(see “mocha”-labels, for examples).
+
 - `appNewVersion` (optional, but recommended):
 Version of the downloaded software.
 If given, it will be compared to installed version, to see if download is different.
diff --git a/fragments/header.sh b/fragments/header.sh
index 36f8500..baea5b9 100644
--- a/fragments/header.sh
+++ b/fragments/header.sh
@@ -149,6 +149,11 @@ REOPEN="yes"
 #   URL to download the dmg.
 #   Can be generated with a series of commands (see BBEdit for an example).
 #
+# - curlOptions: (optional)
+#   Options to the curl command, needed for curl to be able to download the software.
+#   Usually used for adding extra headers that some servers need in order to serve the file.
+#   (see “mocha”-labels, for examples).
+#
 # - appNewVersion: (optional)
 #   Version of the downloaded software.
 #   If given, it will be compared to the installed version, to see if the download is different.
diff --git a/fragments/main.sh b/fragments/main.sh
index 71994af..96fdb0e 100644
--- a/fragments/main.sh
+++ b/fragments/main.sh
@@ -178,7 +178,9 @@ else
             displaynotification "Downloading new $name" "Download in progress …"
         fi
     fi
-    if ! curl -fsL ${=curlOptions} "$downloadURL" -o "$archiveName"; then
+    set -x
+    if ! curl -fsL ${curlOptions} "$downloadURL" -o "$archiveName"; then
+    set +x
         printlog "error downloading $downloadURL"
         message="$name update/installation failed. This will be logged, so IT can follow up."
         if [[ $currentUser != "loginwindow" && $NOTIFY == "all" ]]; then
@@ -192,7 +194,7 @@ else
         cleanupAndExit 2
     fi
 fi
-
+set +x
 # MARK: when user is logged in, and app is running, prompt user to quit app
 if [[ $BLOCKING_PROCESS_ACTION == "ignore" ]]; then
     printlog "ignoring blocking processes"