diff --git a/NEWS b/NEWS
index 35fba5b78..dbd9cbe1a 100644
--- a/NEWS
+++ b/NEWS
@@ -1,4 +1,6 @@
 ver 0.22.7 (not yet released)
+* protocol
+  - don't use glibc extension to parse time stamps
 * decoder
   - ffmpeg: fix build problem with FFmpeg 3.4
 * storage
diff --git a/src/time/ISO8601.cxx b/src/time/ISO8601.cxx
index 067e4c4ee..edda7034e 100644
--- a/src/time/ISO8601.cxx
+++ b/src/time/ISO8601.cxx
@@ -185,7 +185,7 @@ ParseISO8601(const char *s)
 	struct tm tm{};
 
 	/* parse the date */
-	const char *end = strptime(s, "%F", &tm);
+	const char *end = strptime(s, "%Y-%m-%d", &tm);
 	if (end == nullptr) {
 		/* try without field separators */
 		end = strptime(s, "%Y%m%d", &tm);