diff --git a/Cargo.lock b/Cargo.lock
index 8693143..479c817 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -501,9 +501,9 @@ dependencies = [
 
 [[package]]
 name = "fstr"
-version = "0.2.20"
+version = "0.2.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "53330ae61ec107fd3b0548503d0b1003d6ad5a9c534796a062aea966291c135f"
+checksum = "b3b8f793a77bb6d48059953a3e9820fd860d19a9bed8164ed3572eb1981ec8aa"
 dependencies = [
  "serde",
 ]
diff --git a/benchmarks/Cargo.toml b/benchmarks/Cargo.toml
index 6e6c553..7570de1 100644
--- a/benchmarks/Cargo.toml
+++ b/benchmarks/Cargo.toml
@@ -13,7 +13,7 @@ homepage = "https://github.com/Zentheon/hashstr"
 publish = false
 
 [dependencies]
-fstr = "0.2.17"
+fstr = "0.2.21"
 generic-array = "1.3.5"
 constant_time_eq = "0.5.0"
 digest = "0.11.2"
diff --git a/hashstr/Cargo.toml b/hashstr/Cargo.toml
index 27ec738..d3ab426 100644
--- a/hashstr/Cargo.toml
+++ b/hashstr/Cargo.toml
@@ -46,7 +46,7 @@ whirlpool = ["dep:whirlpool"]
 
 [dependencies]
 hashstr-derive = { path = "../hashstr-derive", version = "0.3.0" }
-fstr = { version = "0.2.20", default-features = false }
+fstr = { version = "0.2.21", default-features = false }
 generic-array = "1.3.5"
 tracing = { version = "0.1.41", optional = true, default-features = false }
 constant_time_eq = "0.5.0"