diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index 4f1fed626..1d9bb8656 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -13,7 +13,7 @@ jobs:
           - stable
           - beta
           - nightly
-          - "1.65"
+          - "1.66"
         target:
           - x86_64-unknown-linux-gnu
           - x86_64-unknown-linux-musl
diff --git a/Cargo.toml b/Cargo.toml
index 01b959000..17bf452b5 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -15,7 +15,7 @@ homepage = "https://github.com/cloud-hypervisor/cloud-hypervisor"
 # a.) A dependency requires it,
 # b.) If we want to use a new feature and that MSRV is at least 6 months old,
 # c.) There is a security issue that is addressed by the toolchain update.
-rust-version = "1.65"
+rust-version = "1.66"
 
 [profile.release]
 lto = true