diff --git a/hacks.lua b/hacks.lua
index 79cd2ee..89c4ca9 100644
--- a/hacks.lua
+++ b/hacks.lua
@@ -37,3 +37,12 @@ if minetest.get_modpath("digistuff") and minetest.registered_nodes["digistuff:ni
 		}
 	})
 end
+
+-- override signs_lib's static_save property
+-- false causes it to stay loaded over the server lifetime (*all* visited signs)
+-- related: https://github.com/pandorabox-io/pandorabox.io/issues/544
+if minetest.get_modpath("signs_lib") then
+	local def = minetest.registered_entities["signs_lib:text"]
+	assert(def)
+	def.static_save = true
+end
diff --git a/mod.conf b/mod.conf
index d9245b2..13eae1c 100644
--- a/mod.conf
+++ b/mod.conf
@@ -38,6 +38,7 @@ advtrains_platform,
 prefab,
 vacuum,
 maptools,
-bamboo
-digistuff
+bamboo,
+digistuff,
+signs_lib
 """