diff --git a/connect4/Cargo.lock b/connect4/Cargo.lock
index 745c62d..548019a 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"
@@ -1956,9 +1958,9 @@ dependencies = [
 
 [[package]]
 name = "smallvec"
-version = "1.3.0"
+version = "1.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "05720e22615919e4734f6a99ceae50d00226c3c5aca406e102ebc33298214e0a"
+checksum = "f2dd574626839106c320a323308629dcb1acfc96e32a8cba364ddc61ac23ee83"
 
 [[package]]
 name = "socket2"