diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index cd4871a..3955601 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -15,6 +15,7 @@ jobs:
     strategy:
       matrix:
         rust:
+          - "1.63" # minimum stable rust version
           - stable
           - beta
           - nightly
diff --git a/Cargo.toml b/Cargo.toml
index aafd4b4..e63ccbe 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -10,6 +10,7 @@ keywords = ["mutex", "rwlock", "once", "thread"]
 description = "Ensure deadlock-free mutexes by allocating in order, or else."
 readme = "README.md"
 repository = "https://github.com/bertptrs/tracing-mutex"
+rust-version = "1.63"
 
 [package.metadata.docs.rs]
 # Build docs for all features so the documentation is more complete
diff --git a/bors.toml b/bors.toml
index 6f20720..452f44b 100644
--- a/bors.toml
+++ b/bors.toml
@@ -1,4 +1,5 @@
 status = [
+    'Rust project (1.63)',
     'Rust project (stable)',
     'Rust project (beta)',
     'Documentation build',