diff --git a/Cargo.lock b/Cargo.lock
index 2eac5a3..34d51c1 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 = "adler2"
+version = "2.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "512761e0bb2578dd7380c6baaa0f4ce03e84f95e960231d1dec8bf4d7d6e2627"
+
 [[package]]
 name = "anyhow"
 version = "1.0.86"
@@ -149,7 +155,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "46303f565772937ffe1d394a4fac6f411c6013172fadde9dcdb1e147a086940e"
 dependencies = [
  "crc32fast",
- "miniz_oxide",
+ "miniz_oxide 0.7.1",
 ]
 
 [[package]]
@@ -265,6 +271,15 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e7810e0be55b428ada41041c41f32c9f1a42817901b4ccf45fa3d4b6561e74c7"
 dependencies = [
  "adler",
+]
+
+[[package]]
+name = "miniz_oxide"
+version = "0.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e2d80299ef12ff69b16a84bb182e3b9df68b5a91574d3d4fa6e41b65deec4df1"
+dependencies = [
+ "adler2",
  "simd-adler32",
 ]
 
@@ -335,15 +350,15 @@ checksum = "e3148f5046208a5d56bcfc03053e3ca6334e51da8dfb19b6cdc8b306fae3283e"
 
 [[package]]
 name = "png"
-version = "0.17.13"
+version = "0.17.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "06e4b0d3d1312775e782c86c91a111aa1f910cbb65e1337f9975b5f9a554b5e1"
+checksum = "52f9d46a34a05a6a57566bc2bfae066ef07585a6e3fa30fbbdff5936380623f0"
 dependencies = [
  "bitflags",
  "crc32fast",
  "fdeflate",
  "flate2",
- "miniz_oxide",
+ "miniz_oxide 0.8.0",
 ]
 
 [[package]]
diff --git a/ocrs-cli/Cargo.toml b/ocrs-cli/Cargo.toml
index dae9da8..a943b77 100644
--- a/ocrs-cli/Cargo.toml
+++ b/ocrs-cli/Cargo.toml
@@ -10,7 +10,7 @@ repository = "https://github.com/robertknight/ocrs"
 
 [dependencies]
 image = { version = "0.25.1", default-features = false, features = ["png", "jpeg", "webp"] }
-png = "0.17.13"
+png = "0.17.14"
 serde_json = "1.0.127"
 rten = { workspace = true }
 rten-imageproc = { workspace = true }