diff --git a/Cargo.lock b/Cargo.lock
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -106,6 +106,7 @@
  "cfg-if",
  "cipher",
  "cpufeatures",
+ "zeroize",
 ]
 
 [[package]]
@@ -118,6 +119,7 @@
  "chacha20",
  "cipher",
  "poly1305",
+ "zeroize",
 ]
 
 [[package]]
diff --git a/Cargo.toml b/Cargo.toml
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -37,7 +37,7 @@
 [dev-dependencies]
 getrandom = { version = "0.4.2", features = ["sys_rng"] }
 aead = { version = "0.6.0-rc.10", features = ["alloc"] }
-chacha20poly1305 = "=0.11.0-rc.3"
+chacha20poly1305 = { version = "=0.11.0-rc.3", features = ["zeroize"] }
 criterion = { version ="0.8.2", features = ["html_reports"] }
 
 [[bench]]