diff --git a/Cargo.lock b/Cargo.lock
index 73c395e45..7e1518e86 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -8,6 +8,12 @@ version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f26201604c87b1e01bd3d98f8d5d9a8fcbb815e8cedb41ffccbeb4bf593a35fe"
 
+[[package]]
+name = "adler32"
+version = "1.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "aae1277d39aeec15cb388266ecc24b11c80469deae6067e17a1a7aa9e5c1f234"
+
 [[package]]
 name = "aead"
 version = "0.4.3"
@@ -833,6 +839,15 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "deflate"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c86f7e25f518f4b81808a2cf1c50996a61f5c2eb394b2393bd87f2a4780a432f"
+dependencies = [
+ "adler32",
+]
+
 [[package]]
 name = "delegate"
 version = "0.6.2"
@@ -2417,6 +2432,18 @@ dependencies = [
  "plotters-backend",
 ]
 
+[[package]]
+name = "png"
+version = "0.17.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dc38c0ad57efb786dd57b9864e5b18bae478c00c824dc55a38bbc9da95dde3ba"
+dependencies = [
+ "bitflags",
+ "crc32fast",
+ "deflate",
+ "miniz_oxide",
+]
+
 [[package]]
 name = "polyval"
 version = "0.5.3"
@@ -3083,6 +3110,7 @@ dependencies = [
  "num-derive",
  "num-traits",
  "pddb",
+ "png",
  "rand 0.8.5",
  "rkyv",
  "root-keys",