diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 085febd..d1c75fa 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -51,7 +51,7 @@ jobs:
         include:
         - build: pinned
           os: ubuntu-18.04
-          rust: 1.46.0
+          rust: 1.51.0
         - build: stable
           os: ubuntu-18.04
           rust: stable
diff --git a/README.md b/README.md
index 813d005..a7017ce 100644
--- a/README.md
+++ b/README.md
@@ -14,7 +14,7 @@ jsonwebtoken = "7"
 serde = {version = "1.0", features = ["derive"] }
 ```
 
-The minimum required Rust version is 1.46.
+The minimum required Rust version is 1.51.
 
 ## Algorithms
 This library currently supports the following: