diff --git a/packer/Cargo.lock b/packer/Cargo.lock
index e9208031e..2c6cbe784 100644
--- a/packer/Cargo.lock
+++ b/packer/Cargo.lock
@@ -622,9 +622,9 @@ dependencies = [
 
 [[package]]
 name = "serde_yaml"
-version = "0.8.20"
+version = "0.8.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ad104641f3c958dab30eb3010e834c2622d1f3f4c530fef1dee20ad9485f3c09"
+checksum = "d8c608a35705a5d3cdc9fbe403147647ff34b921f8e833e49306df898f9b20af"
 dependencies = [
  "dtoa",
  "indexmap",
diff --git a/packer/Cargo.toml b/packer/Cargo.toml
index 2340e0ce7..8ab2c1ef7 100644
--- a/packer/Cargo.toml
+++ b/packer/Cargo.toml
@@ -14,7 +14,7 @@ clap = "2.33.3"
 shellexpand = "2.1.0"
 tar = "0.4.37"
 serde = { version = "1.0.130", features = ["derive"] }
-serde_yaml = "0.8.20"
+serde_yaml = "0.8.21"
 anyhow = "1.0.43"
 sha2 = "0.9.6"
 data-encoding = "2.3.2"