diff --git a/staking-miner-playground/Cargo.lock b/staking-miner-playground/Cargo.lock
index 0e1339d22..1ce094f53 100644
--- a/staking-miner-playground/Cargo.lock
+++ b/staking-miner-playground/Cargo.lock
@@ -2479,9 +2479,9 @@ dependencies = [
 
 [[package]]
 name = "h2"
-version = "0.3.23"
+version = "0.3.26"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b553656127a00601c8ae5590fcfdc118e4083a7924b6cf4ffc1ea4b99dc429d7"
+checksum = "81fe527a889e1532da5c525686d96d4c2e74cdd345badf8dfef9f6b39dd5f5e8"
 dependencies = [
  "bytes",
  "fnv",