diff --git a/src/lib.zig b/src/lib.zig
index 7ce831b6bfbcefc68aea9770e444057d170f07ac..3bc729105490f1beb35f4ea5af353a9a8f92f08c 100644
--- a/src/lib.zig
+++ b/src/lib.zig
@@ -14,6 +14,9 @@ pub fn init(alloc: std.mem.Allocator) void {
 
 pub fn deinit() void {
     singles.deinit();
+    for (multis.values()) |array_list| {
+        array_list.deinit();
+    }
     multis.deinit();
 }