diff --git a/git-fast-import/Cargo.toml b/git-fast-import/Cargo.toml
index a883385..5d665c7 100644
--- a/git-fast-import/Cargo.toml
+++ b/git-fast-import/Cargo.toml
@@ -10,5 +10,5 @@ license = "Apache-2.0"
 derive_more = "0.99.17"
 nom = "7.1.0"
 rev_lines = "0.2.1"
-serde = "1.0.136"
+serde = "1.0.188"
 thiserror = "1.0.30"
diff --git a/internal/state/Cargo.toml b/internal/state/Cargo.toml
index 4a6c2a9..787e4be 100644
--- a/internal/state/Cargo.toml
+++ b/internal/state/Cargo.toml
@@ -9,7 +9,7 @@ bincode = "1.3.3"
 derive_more = "0.99.17"
 git-fast-import = { path = "../../git-fast-import" }
 log = "0.4.14"
-serde = { version = "1.0.136", features = ["derive", "rc"] }
+serde = { version = "1.0.188", features = ["derive", "rc"] }
 speedy = "0.8.1"
 thiserror = "1.0.30"
 tokio = { version = "1.16.1", features = ["io-util", "sync"] }