diff --git a/Cargo.lock b/Cargo.lock
index b596c59c5..fe6032a6b 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1314,9 +1314,9 @@ checksum = "37909eebbb50d72f9059c3b6d82c0463f2ff062c9e95845c43a6c9c0355411be"
 
 [[package]]
 name = "flate2"
-version = "1.1.0"
+version = "1.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "11faaf5a5236997af9848be0bef4db95824b1d534ebc64d0f0c6cf3e67bd38dc"
+checksum = "7ced92e76e966ca2fd84c8f7aa01a4aea65b0eb6648d72f7c8f3e2764a67fece"
 dependencies = [
  "crc32fast",
  "miniz_oxide",
diff --git a/actix-http/Cargo.toml b/actix-http/Cargo.toml
index 0e5c4b234..8f7542207 100644
--- a/actix-http/Cargo.toml
+++ b/actix-http/Cargo.toml
@@ -140,7 +140,7 @@ actix-tls = { version = "3.4", default-features = false, optional = true }
 
 # compress-*
 brotli = { version = "7", optional = true }
-flate2 = { version = "1.0.13", optional = true }
+flate2 = { version = "1.1.1", optional = true }
 zstd = { version = "0.13", optional = true }
 
 [dev-dependencies]
diff --git a/actix-web/Cargo.toml b/actix-web/Cargo.toml
index 29c6970e6..297cdff6b 100644
--- a/actix-web/Cargo.toml
+++ b/actix-web/Cargo.toml
@@ -178,7 +178,7 @@ const-str = "0.5"
 core_affinity = "0.8"
 criterion = { version = "0.5", features = ["html_reports"] }
 env_logger = "0.11"
-flate2 = "1.0.13"
+flate2 = "1.1.1"
 futures-util = { version = "0.3.17", default-features = false, features = ["std"] }
 rand = "0.9"
 rcgen = "0.13"
diff --git a/awc/Cargo.toml b/awc/Cargo.toml
index 106def621..afcaceb86 100644
--- a/awc/Cargo.toml
+++ b/awc/Cargo.toml
@@ -144,7 +144,7 @@ actix-web = { version = "4", features = ["openssl"] }
 brotli = "7"
 const-str = "0.5"
 env_logger = "0.11"
-flate2 = "1.0.13"
+flate2 = "1.1.1"
 futures-util = { version = "0.3.17", default-features = false }
 static_assertions = "1.1"
 rcgen = "0.13"