diff --git a/src/sandbox.lua b/src/sandbox.lua
index 941d66d..c3e377a 100644
--- a/src/sandbox.lua
+++ b/src/sandbox.lua
@@ -449,11 +449,19 @@ coroutine.yield() -- startup delay
 local f = bootstrap()
 local co = coroutine.create(f)
 
+local gcInterval = 0.25
+local lastGC = computer.uptime()
+
 while true do
     timeout = nextDeadline()
     bubbleYield = false
     collectgarbage()
 
+    if computer.uptime() - lastGC >= gcInterval then
+        collectgarbage("collect")
+        lastGC = computer.uptime()
+    end
+
     local ok, err = coroutine.resume(co)
 
     if not ok then