diff --git a/lib/iolog/regress/fuzz/fuzz_iolog_json.dict b/lib/iolog/regress/fuzz/fuzz_iolog_json.dict
index e7d7b8863..2caf63df9 100644
--- a/lib/iolog/regress/fuzz/fuzz_iolog_json.dict
+++ b/lib/iolog/regress/fuzz/fuzz_iolog_json.dict
@@ -1,7 +1,10 @@
 # I/O log JSON keywords
 "\"columns\""
 "\"command\""
+"\"dumped_core\""
+"\"exit_value\""
 "\"lines\""
+"\"run_time\""
 "\"runargv\""
 "\"runenv\""
 "\"rungid\""
@@ -10,6 +13,7 @@
 "\"runuser\""
 "\"runchroot\""
 "\"runcwd\""
+"\"signal\""
 "\"submitcwd\""
 "\"submithost\""
 "\"submituser\""