diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 12ec719..49c6670 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -3,38 +3,6 @@ name: Tests
 on: push
 
 jobs:
-  windows-test:
-    runs-on: windows-latest
-
-    steps:
-      - uses: actions/checkout@v1
-      - uses: hecrj/setup-rust-action@master
-        with:
-          rust-version: stable
-
-      - name: Build project
-        run: cargo build --verbose
-
-      - name: Test project
-        run: cargo test --verbose
-        env:
-          SERVER_HOSTNAME: localhost
-
-  macos-test:
-    runs-on: macos-latest
-
-    steps:
-      - uses: actions/checkout@v1
-      - uses: hecrj/setup-rust-action@master
-        with:
-          rust-version: stable
-
-      - name: Build project
-        run: cargo build --verbose
-
-      - name: Test project
-        run: cargo test --verbose
-
   linux-test:
     runs-on: ubuntu-latest
     services:
@@ -100,7 +68,7 @@ jobs:
       - uses: actions/checkout@v1
       - uses: hecrj/setup-rust-action@master
         with:
-          rust-version: 1.50.0
+          rust-version: 1.56.0
 
       - name: Build project
         run: cargo build --verbose
diff --git a/Cargo.toml b/Cargo.toml
index cc2f664..3f055cd 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -2,11 +2,11 @@
 name = "ftp-client"
 version = "0.1.2"
 authors = ["Adilson Neto <almeidneto@gmail.com>"]
-edition = "2018"
+edition = "2021"
 readme = "README.md"
 
-keywords = [ "ftp" ]
-categories = [ "network-programming" ]
+keywords = ["ftp"]
+categories = ["network-programming"]
 description = "A FTP client library"
 repository = "https://github.com/aaneto/ftp-client"
 license = "MIT"