diff --git a/Cargo.toml b/Cargo.toml
index 0008393..cbd7e74 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "imagequant"
-version = "4.3.0"
+version = "4.3.1"
 description = "Convert 24/32-bit images to 8-bit palette with alpha channel.\nFor lossy PNG compression and high-quality GIF images\nDual-licensed like pngquant. See https://pngquant.org for details."
 authors = ["Kornel Lesiński <kornel@pngquant.org>"]
 license = "GPL-3.0-or-later"
@@ -12,7 +12,7 @@ keywords = ["quantization", "palette", "pngquant", "compression", "gif"]
 include = ["COPYRIGHT", "src/*.rs", "*.h", "README.md", "Cargo.toml"]
 readme = "README.md"
 edition = "2021"
-rust-version = "1.64"
+rust-version = "1.65"
 
 [features]
 default = ["threads"]
@@ -31,11 +31,11 @@ panic = "abort"
 doctest = false
 
 [dependencies]
-arrayvec = "0.7.2"
-rgb = { version = "0.8.33", features = ["argb"] }
-rayon = { version = "1.5.3", optional = true }
-thread_local = { version = "1.1.4", optional = true }
-once_cell = "1.13.1"
+arrayvec = "0.7.4"
+rgb = { version = "0.8.37", features = ["argb"] }
+rayon = { version = "1.10.0", optional = true }
+thread_local = { version = "1.1.8", optional = true }
+once_cell = "1.19.0"
 
 [dev-dependencies]
 lodepng = "3.10.0"
diff --git a/imagequant-sys/Cargo.toml b/imagequant-sys/Cargo.toml
index e4b2665..282c782 100644
--- a/imagequant-sys/Cargo.toml
+++ b/imagequant-sys/Cargo.toml
@@ -24,8 +24,8 @@ name = "imagequant_sys"
 
 [dependencies]
 imagequant = { path = "..", version = "4.2.1", default-features = false, features = ["_internal_c_ffi"] }
-bitflags = "2.0"
-libc = "0.2.112"
+bitflags = "2.5"
+libc = "0.2.153"
 
 [package.metadata.capi.library]
 name = "imagequant"
diff --git a/imagequant-sys/c_test/Cargo.toml b/imagequant-sys/c_test/Cargo.toml
index 60557c0..06a1a29 100644
--- a/imagequant-sys/c_test/Cargo.toml
+++ b/imagequant-sys/c_test/Cargo.toml
@@ -14,4 +14,4 @@ release = false
 imagequant-sys = { version = "4.0.3", path = ".." }
 
 [build-dependencies]
-cc = "1.0.72"
+cc = "1.0.95"