diff --git a/connect4/Cargo.lock b/connect4/Cargo.lock
index 745c62d..b0778f4 100644
--- a/connect4/Cargo.lock
+++ b/connect4/Cargo.lock
@@ -1,5 +1,7 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
+version = 3
+
 [[package]]
 name = "aho-corasick"
 version = "0.7.10"
@@ -209,9 +211,9 @@ checksum = "40e38929add23cdf8a366df9b0e088953150724bcbe5fc330b0d8eb3b328eec8"
 
 [[package]]
 name = "bumpalo"
-version = "3.2.1"
+version = "3.12.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "12ae9db68ad7fac5fe51304d20f016c911539251075a214f8e663babefa35187"
+checksum = "0d261e256854913907f67ed06efbc3338dfe6179796deefc1ff763fc1aee5535"
 
 [[package]]
 name = "byte-tools"