diff --git a/Cargo.lock b/Cargo.lock
index dd7f26a43d85b3cc671616306afda0d25791102a..9785f91156f7de084248935cc686ef92850487a6 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1,10 +1,10 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
 [[package]]
-name = "adler32"
-version = "1.0.4"
+name = "adler"
+version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5d2e7343e7fc9de883d1b0341e0b13970f764c14101234857d2ddafa1cb1cac2"
+checksum = "ee2a4ec343196209d6594e19543ae87a39f96d5534d7174822a3ad825dd6ed7e"
 
 [[package]]
 name = "aho-corasick"
@@ -176,9 +176,9 @@ checksum = "bb1f6b1ce1c140482ea30ddd3335fc0024ac7ee112895426e0a629a6c20adfe3"
 
 [[package]]
 name = "flate2"
-version = "1.0.14"
+version = "1.0.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2cfff41391129e0a856d6d822600b8d71179d46879e310417eb9c762eb178b42"
+checksum = "766d0e77a2c1502169d4a93ff3b8c15a71fd946cd0126309752104e5f3c46d94"
 dependencies = [
  "cfg-if",
  "crc32fast",
@@ -248,11 +248,11 @@ dependencies = [
 
 [[package]]
 name = "miniz_oxide"
-version = "0.3.6"
+version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "aa679ff6578b1cddee93d7e82e263b94a575e0bfced07284eb0c037c1d2416a5"
+checksum = "be0f75932c1f6cfae3c04000e40114adf955636e19040f9c0a2c380702aa1c7f"
 dependencies = [
- "adler32",
+ "adler",
 ]
 
 [[package]]
diff --git a/neon/native/Cargo.toml b/neon/native/Cargo.toml
index d410157c1a14c771f256312b14f669c600aec6ea..2bb2b1e44efa400b61dcae1f60a1d9167895d8ce 100644
--- a/neon/native/Cargo.toml
+++ b/neon/native/Cargo.toml
@@ -19,5 +19,5 @@ bincode = "1.2.1"
 bs58 = "0.3.0"
 dup-crypto = { version = "0.17", default-features = false, features = ["rand", "scrypt"] }
 dubp-wot = "0.11.0"
-flate2 = "1.0.14"
+flate2 = "1.0.16"
 neon = "0.4.0"