diff --git a/include/geode/basic/cached_value.hpp b/include/geode/basic/cached_value.hpp
index d5fb4a3b9..f17648c8a 100644
--- a/include/geode/basic/cached_value.hpp
+++ b/include/geode/basic/cached_value.hpp
@@ -93,7 +93,7 @@ namespace geode
             return false;
         }
 
-        void reset()
+        void reset() const
         {
             computed_ = false;
         }
diff --git a/src/geode/mesh/core/solid_mesh.cpp b/src/geode/mesh/core/solid_mesh.cpp
index ca65f1aed..c5a06d876 100644
--- a/src/geode/mesh/core/solid_mesh.cpp
+++ b/src/geode/mesh/core/solid_mesh.cpp
@@ -699,6 +699,7 @@ namespace geode
             {
                 return cached.value();
             }
+            cached.reset();
             cached( compute_polyhedra_around_vertex, mesh, vertex_id,
                 first_polyhedron );
             return cached.value();
diff --git a/src/geode/mesh/core/surface_mesh.cpp b/src/geode/mesh/core/surface_mesh.cpp
index 6ec4f1a06..465292ae0 100644
--- a/src/geode/mesh/core/surface_mesh.cpp
+++ b/src/geode/mesh/core/surface_mesh.cpp
@@ -537,13 +537,13 @@ namespace geode
                 const std::optional< PolygonVertex >& first_polygon ) const
         {
             const auto& cached = polygons_around_vertex_->value( vertex_id );
-            if( cached.computed()
-                && ( first_polygon
-                     && absl::c_contains(
-                         cached.value().polygons, first_polygon.value() ) ) )
+            if( cached.computed() && first_polygon
+                && absl::c_contains(
+                    cached.value().polygons, first_polygon.value() ) )
             {
                 return cached.value();
             }
+            cached.reset();
             cached( compute_polygons_around_vertex, mesh, vertex_id,
                 first_polygon );
             return cached.value();