diff --git a/Libraries/LibGC/Heap.cpp b/Libraries/LibGC/Heap.cpp
index f470c42f4c7..9617211726d 100644
--- a/Libraries/LibGC/Heap.cpp
+++ b/Libraries/LibGC/Heap.cpp
@@ -430,6 +430,14 @@ void Heap::mark_live_cells(HashMap<Cell*, HeapRoot> const& roots)
     for (auto& inverse_root : m_uprooted_cells)
         inverse_root->set_marked(false);
 
+    for_each_block([&](auto& block) {
+        block.template for_each_cell_in_state<Cell::State::Live>([&](Cell* cell) {
+            if (!cell->is_marked() && cell_must_survive_garbage_collection(*cell))
+                cell->visit_edges(visitor);
+        });
+        return IterationDecision::Continue;
+    });
+
     m_uprooted_cells.clear();
 }
 
@@ -444,7 +452,7 @@ void Heap::finalize_unmarked_cells()
 {
     for_each_block([&](auto& block) {
         block.template for_each_cell_in_state<Cell::State::Live>([](Cell* cell) {
-            if (!cell->is_marked() && !cell_must_survive_garbage_collection(*cell))
+            if (!cell->is_marked())
                 cell->finalize();
         });
         return IterationDecision::Continue;
@@ -466,7 +474,7 @@ void Heap::sweep_dead_cells(bool print_report, Core::ElapsedTimer const& measure
         bool block_has_live_cells = false;
         bool block_was_full = block.is_full();
         block.template for_each_cell_in_state<Cell::State::Live>([&](Cell* cell) {
-            if (!cell->is_marked() && !cell_must_survive_garbage_collection(*cell)) {
+            if (!cell->is_marked()) {
                 dbgln_if(HEAP_DEBUG, "  ~ {}", cell);
                 block.deallocate(cell);
                 ++collected_cells;
diff --git a/Tests/LibWeb/Text/expected/WebSocket/WebSocket-gc.txt b/Tests/LibWeb/Text/expected/WebSocket/WebSocket-gc.txt
new file mode 100644
index 00000000000..50586a4cbfb
--- /dev/null
+++ b/Tests/LibWeb/Text/expected/WebSocket/WebSocket-gc.txt
@@ -0,0 +1 @@
+PASS! (Didn't crash)
diff --git a/Tests/LibWeb/Text/input/WebSocket/WebSocket-gc.html b/Tests/LibWeb/Text/input/WebSocket/WebSocket-gc.html
new file mode 100644
index 00000000000..246911e4fbb
--- /dev/null
+++ b/Tests/LibWeb/Text/input/WebSocket/WebSocket-gc.html
@@ -0,0 +1,21 @@
+<script src="../include.js"></script>
+<script>
+    asyncTest((done) => {
+        {
+            const ws = new WebSocket('wss://echo.websocket.org');
+
+            ws.onopen = () => {
+            };
+            ws.onmessage = () => {
+            };
+            ws.onerror = () => {
+            };
+        }
+
+        setTimeout(() => {
+            internals.gc();
+            println("PASS! (Didn't crash)");
+            done();
+        }, 0);
+    });
+</script>