diff --git a/changes/bug14125 b/changes/bug14125
new file mode 100644
index 0000000000..fe6821a332
--- /dev/null
+++ b/changes/bug14125
@@ -0,0 +1,5 @@
+  o Minor bugfixes (dirauth):
+    - Enlarge the buffer to read bw-auth generated files to avoid an
+      issue when parsing the file in dirserv_read_measured_bandwidths().
+      Bugfix on 0.2.2.1-alpha, fixes #14125.
+
diff --git a/src/or/dirserv.c b/src/or/dirserv.c
index aa56861210..d668749c5b 100644
--- a/src/or/dirserv.c
+++ b/src/or/dirserv.c
@@ -2260,7 +2260,7 @@ int
 dirserv_read_measured_bandwidths(const char *from_file,
                                  smartlist_t *routerstatuses)
 {
-  char line[256];
+  char line[512];
   FILE *fp = tor_fopen_cloexec(from_file, "r");
   int applied_lines = 0;
   time_t file_time, now;