diff --git a/src/pextlib1.0/curl.c b/src/pextlib1.0/curl.c
index 8e19f36aae..d9e6aa1c0d 100644
--- a/src/pextlib1.0/curl.c
+++ b/src/pextlib1.0/curl.c
@@ -835,6 +835,7 @@ CurlIsNewerCmd(Tcl_Interp* interp, int objc, Tcl_Obj* const objv[])
 		CURLcode theCurlCode;
 		long theModDate;
 		long userModDate;
+		const char* userAgent = PACKAGE_NAME "/" PACKAGE_VERSION " libcurl/" LIBCURL_VERSION;
 
 		optioncrsr = 2;
 		lastoption = objc - 3;
@@ -905,6 +906,13 @@ CurlIsNewerCmd(Tcl_Interp* interp, int objc, Tcl_Obj* const objv[])
 			break;
 		}
 
+		/* -A option */
+		theCurlCode = curl_easy_setopt(theHandle, CURLOPT_USERAGENT, userAgent);
+		if (theCurlCode != CURLE_OK) {
+			theResult = SetResultFromCurlErrorCode(interp, theCurlCode);
+			break;
+		}
+
 		/* --max-redirs option, same default as curl command line */
 		theCurlCode = curl_easy_setopt(theHandle, CURLOPT_MAXREDIRS, 50);
 		if (theCurlCode != CURLE_OK) {