diff --git a/Cargo.lock b/Cargo.lock
index 7646068..6b5d99b 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1186,6 +1186,7 @@ dependencies = [
  "cfg-if 1.0.0",
  "crc32fast",
  "libc",
+ "libz-sys",
  "miniz_oxide",
 ]
 
@@ -1687,6 +1688,19 @@ version = "0.2.93"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9385f66bf6105b241aa65a61cb923ef20efc665cb9f9bb50ac2f0c4b7f378d41"
 
+[[package]]
+name = "libz-sys"
+version = "1.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "de5435b8549c16d423ed0c03dbaafe57cf6c3344744f1242520d59c9d8ecec66"
+dependencies = [
+ "cc",
+ "cmake",
+ "libc",
+ "pkg-config",
+ "vcpkg",
+]
+
 [[package]]
 name = "lock_api"
 version = "0.4.3"
@@ -2051,6 +2065,12 @@ version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8b870d8c151b6f2fb93e84a13146138f05d02ed11c7e7c54f8826aaaf7c9f184"
 
+[[package]]
+name = "pkg-config"
+version = "0.3.19"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3831453b3449ceb48b6d9c7ad7c96d5ea673e9b470a1dc578c2ce6521230884c"
+
 [[package]]
 name = "ppv-lite86"
 version = "0.2.10"
@@ -3006,6 +3026,12 @@ version = "0.7.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "09cc8ee72d2a9becf2f2febe0205bbed8fc6615b7cb429ad062dc7b7ddd036a9"
 
+[[package]]
+name = "vcpkg"
+version = "0.2.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cbdbff6266a24120518560b5dc983096efb98462e51d0d68169895b237be3e5d"
+
 [[package]]
 name = "vec_map"
 version = "0.8.2"
diff --git a/indexer/Cargo.toml b/indexer/Cargo.toml
index 28f26ce..908c872 100644
--- a/indexer/Cargo.toml
+++ b/indexer/Cargo.toml
@@ -17,7 +17,7 @@ bincode = "1.3"
 duniter-core = { git = "https://git.duniter.org/nodes/rust/duniter-core" }
 duniter-gva-db = { path = "../db" }
 dubp = { version = "0.54.1", features = ["duniter"] }
-flate2 = "1.0.16"
+flate2 = { version = "1.0", features = ["zlib-ng-compat"], default-features = false }
 log = "0.4"
 once_cell = "1.7"
 resiter = "0.4.0"