diff --git a/lib/time/update.bash b/lib/time/update.bash
index 28f904da9f5..695da8e8f17 100755
--- a/lib/time/update.bash
+++ b/lib/time/update.bash
@@ -8,8 +8,8 @@
 # Consult https://www.iana.org/time-zones for the latest versions.
 
 # Versions to use.
-CODE=2019b
-DATA=2019b
+CODE=2019c
+DATA=2019c
 
 set -e
 rm -rf work
diff --git a/lib/time/zoneinfo.zip b/lib/time/zoneinfo.zip
index 909cf48dd50..61c97ce0f01 100644
Binary files a/lib/time/zoneinfo.zip and b/lib/time/zoneinfo.zip differ