diff --git a/cacheops/lua/cache_thing.lua b/cacheops/lua/cache_thing.lua
index 9569b87b..460e3f04 100644
--- a/cacheops/lua/cache_thing.lua
+++ b/cacheops/lua/cache_thing.lua
@@ -1,3 +1,4 @@
+--!df flags=allow-undeclared-keys
 local prefix = KEYS[1]
 local key = KEYS[2]
 local precall_key = KEYS[3]
diff --git a/cacheops/lua/cache_thing_insideout.lua b/cacheops/lua/cache_thing_insideout.lua
index a060f346..3917fbf6 100644
--- a/cacheops/lua/cache_thing_insideout.lua
+++ b/cacheops/lua/cache_thing_insideout.lua
@@ -1,3 +1,4 @@
+--!df flags=allow-undeclared-keys
 local prefix = KEYS[1]
 local key = KEYS[2]
 local data = ARGV[1]
diff --git a/cacheops/lua/invalidate.lua b/cacheops/lua/invalidate.lua
index c946450e..dda89acf 100644
--- a/cacheops/lua/invalidate.lua
+++ b/cacheops/lua/invalidate.lua
@@ -1,3 +1,4 @@
+--!df flags=allow-undeclared-keys
 local prefix = KEYS[1]
 local db_table = ARGV[1]
 local obj = cjson.decode(ARGV[2])
diff --git a/cacheops/lua/invalidate_insideout.lua b/cacheops/lua/invalidate_insideout.lua
index 3de0281b..8064a598 100644
--- a/cacheops/lua/invalidate_insideout.lua
+++ b/cacheops/lua/invalidate_insideout.lua
@@ -1,3 +1,4 @@
+--!df flags=allow-undeclared-keys
 local prefix = KEYS[1]
 local db_table = ARGV[1]
 local obj = cjson.decode(ARGV[2])