diff --git a/sjsonnet/src/sjsonnet/DebugStats.scala b/sjsonnet/src/sjsonnet/DebugStats.scala
index 3204733a..cadbd7e2 100644
--- a/sjsonnet/src/sjsonnet/DebugStats.scala
+++ b/sjsonnet/src/sjsonnet/DebugStats.scala
@@ -16,6 +16,9 @@ final class DebugStats {
   var functionCalls: Long = 0
   var builtinCalls: Long = 0
 
+  // -- Stack --
+  var maxStackDepth: Int = 0
+
   // -- Comprehensions --
   var arrayCompIterations: Long = 0
   var objectCompIterations: Long = 0
@@ -39,6 +42,7 @@ final class DebugStats {
     sb.append(formatLine("lazy_created", lazyCreated))
     sb.append(formatLine("function_calls", functionCalls))
     sb.append(formatLine("builtin_calls", builtinCalls))
+    sb.append(formatLine("max_stack_depth", maxStackDepth))
     sb.append(formatLine("array_comp_iterations", arrayCompIterations))
     sb.append(formatLine("object_comp_iterations", objectCompIterations))
     sb.append(formatLine("files_parsed", filesParsed))
diff --git a/sjsonnet/src/sjsonnet/Evaluator.scala b/sjsonnet/src/sjsonnet/Evaluator.scala
index 5b1cf0bd..cb9cf669 100644
--- a/sjsonnet/src/sjsonnet/Evaluator.scala
+++ b/sjsonnet/src/sjsonnet/Evaluator.scala
@@ -33,6 +33,8 @@ class Evaluator(
 
   @inline private[sjsonnet] final def checkStackDepth(pos: Position): Unit = {
     stackDepth += 1
+    if (debugStats != null && stackDepth > debugStats.maxStackDepth)
+      debugStats.maxStackDepth = stackDepth
     if (stackDepth > maxStack)
       Error.fail("Max stack frames exceeded.", pos)
   }