diff --git a/Cargo.toml b/Cargo.toml
index a6b2d9d..a225146 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -21,18 +21,18 @@ ser = ["serde", "serde_indextree"]
 
 [dependencies]
 bytecount = "0.6.0"
-chrono = { version = "0.4.9", optional = true }
+chrono = { version = "0.4.11", optional = true }
 indextree = "4.0.0"
 jetscii = "0.4.4"
 lazy_static = "1.4.0"
-memchr = "2.2.1"
+memchr = "2.3.3"
 # we don't need to parse any float number, so lexical crate is redundant
-nom = { version = "5.0.1", default-features = false, features = ["std"] }
-serde = { version = "1.0.102", optional = true, features = ["derive"] }
+nom = { version = "5.1.1", default-features = false, features = ["std"] }
+serde = { version = "1.0.106", optional = true, features = ["derive"] }
 serde_indextree = { version = "0.2.0", optional = true }
-syntect = { version = "3.3.0", optional = true }
+syntect = { version = "4.1.0", optional = true }
 
 [dev-dependencies]
 pretty_assertions = "0.6.1"
-serde_json = "1.0.41"
+serde_json = "1.0.51"
 slugify = "0.1.0"