diff --git a/ConflictSet.cpp b/ConflictSet.cpp
index 386b895..0231454 100644
--- a/ConflictSet.cpp
+++ b/ConflictSet.cpp
@@ -1151,7 +1151,7 @@ Iterator lastLeq(Node *n, const std::span<const uint8_t> key) {
 void insert(Node **self_, std::span<const uint8_t> key, int64_t writeVersion) {
   for (;;) {
     auto &self = *self_;
-    self->maxVersion = writeVersion;
+    self->maxVersion = std::max(self->maxVersion, writeVersion);
     if (key.size() == 0) {
       auto l = lastLeq(self, key);
       self->entryPresent = true;