diff --git a/ci/docker-rust-nightly/Dockerfile b/ci/docker-rust-nightly/Dockerfile
index 5285956e551691..1a9a2d8eed1bef 100644
--- a/ci/docker-rust-nightly/Dockerfile
+++ b/ci/docker-rust-nightly/Dockerfile
@@ -1,4 +1,4 @@
-FROM solanalabs/rust:1.65.0
+FROM solanalabs/rust:1.66.1
 ARG date
 
 RUN set -x \
diff --git a/ci/docker-rust/Dockerfile b/ci/docker-rust/Dockerfile
index 5e36db91215a51..ec1aac71456b0d 100644
--- a/ci/docker-rust/Dockerfile
+++ b/ci/docker-rust/Dockerfile
@@ -1,6 +1,6 @@
 # Note: when the rust version is changed also modify
 # ci/rust-version.sh to pick up the new image tag
-FROM rust:1.65.0
+FROM rust:1.66.1
 
 RUN set -x \
  && apt update \
diff --git a/rust-toolchain.toml b/rust-toolchain.toml
index f8c2abbb3da936..f701aa5354eb58 100644
--- a/rust-toolchain.toml
+++ b/rust-toolchain.toml
@@ -1,2 +1,2 @@
 [toolchain]
-channel = "1.65.0"
+channel = "1.66.1"