diff --git a/Internal.h b/Internal.h
index cd869e5..c3555c3 100644
--- a/Internal.h
+++ b/Internal.h
@@ -20,7 +20,6 @@ using namespace weaselab;
 #include <thread>
 #include <unordered_set>
 #include <utility>
-#include <vector>
 
 #include <callgrind.h>
 
diff --git a/SkipList.cpp b/SkipList.cpp
index faa36fb..e0bf4e1 100644
--- a/SkipList.cpp
+++ b/SkipList.cpp
@@ -25,6 +25,7 @@
 
 #include <algorithm>
 #include <span>
+#include <vector>
 
 std::span<const uint8_t> keyAfter(Arena &arena, std::span<const uint8_t> key) {
   auto result =