diff --git a/Cargo.toml b/Cargo.toml
index a0a12b8..4fb3622 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -14,7 +14,7 @@ build = "build.rs"
 
 
 [dependencies]
-libc = "0.2"
+libc = "0.2.162"
 
 
 [features]
@@ -27,10 +27,10 @@ embedded-libheif-plugins = ["compile-libheif"]
 
 
 [build-dependencies]
-pkg-config = "0.3"
-prettyplease = { version = "0.2", optional = true }
+pkg-config = "0.3.31"
+prettyplease = { version = "0.2.25", optional = true }
 bindgen = { version = "0.70.1", optional = true }
-cmake = { version = "0.1.50", optional = true }
+cmake = { version = "0.1.51", optional = true }
 
 
 [target.'cfg(windows)'.build-dependencies]