diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index ca20b36..ebf28fb 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -22,7 +22,7 @@ jobs:
         channel: [nightly]
         include:
           - target: i686-pc-windows-gnu
-            channel: 1.46.0
+            channel: 1.56.0
             os: windows-2022
     steps:
       - uses: actions/checkout@v3
diff --git a/Cargo.toml b/Cargo.toml
index 9f3f5e7..d346019 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -9,6 +9,7 @@ repository = "https://github.com/steffengy/schannel-rs"
 readme = "README.md"
 keywords = ["windows", "schannel", "tls", "ssl", "https"]
 edition = "2018"
+rust-version = "1.56.0"
 
 [package.metadata.docs.rs]
 default-target = "x86_64-pc-windows-msvc"