diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index c685d838..31920654 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -13,12 +13,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-
-        # Test against Rust 1.70.0 because that is the oldest supported version
-        # according to Cargo.toml. Test against beta and nightly Rust to get
-        # early warning of any problems that might occur with the upcoming Rust
-        # release. Ordered oldest Rust to newest Rust.
-        rust: [1.71.0, stable, beta, nightly]
+        rust: [1.76.0, stable, beta, nightly]
 
         # Test with no features, default features ("") and all features.
         # Ordered fewest features to most features.
diff --git a/Cargo.toml b/Cargo.toml
index 16278cf4..e5d10065 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -10,6 +10,7 @@ homepage = "https://www.nlnetlabs.nl/projects/routing/rotonda/"
 keywords = ["routing", "bgp"]
 categories = ["network-programming"]
 license = "BSD-3-Clause"
+rust-version = "1.76"
 
 [dependencies]
 # ariadne is set to git because of some unpublished contributions made on