diff --git a/Cargo.lock b/Cargo.lock
index f034aa8..dfa3ed0 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -297,6 +297,12 @@ dependencies = [
  "generic-array",
 ]
 
+[[package]]
+name = "dtoa"
+version = "0.4.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "56899898ce76aaf4a0f24d914c97ea6ed976d42fec6ad33fcbb0a1103e07b2b0"
+
 [[package]]
 name = "either"
 version = "1.6.1"
@@ -889,7 +895,10 @@ checksum = "ac74c624d6b2d21f425f752262f42188365d7b8ff1aff74c82e45136510a4857"
 name = "preserves"
 version = "0.16.0"
 dependencies = [
+ "base64",
+ "dtoa",
  "num",
+ "regex",
  "serde",
  "serde_bytes",
 ]