diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 4982d0dd6..a4163a902 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -195,8 +195,8 @@ jobs:
 
       - name: Install toolchain
         run: |
-          rustup toolchain install 1.75.0
-          rustup default 1.75.0
+          rustup toolchain install 1.78.0
+          rustup default 1.78.0
           rustup component add clippy
 
       - name: Setup OPA
diff --git a/Dockerfile b/Dockerfile
index 30d936750..bc5033429 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -8,7 +8,7 @@
 # The Debian version and version name must be in sync
 ARG DEBIAN_VERSION=12
 ARG DEBIAN_VERSION_NAME=bookworm
-ARG RUSTC_VERSION=1.76.0
+ARG RUSTC_VERSION=1.78.0
 # XXX: Upgrade to 0.10.0 blocked by https://github.com/ziglang/zig/issues/10915#issuecomment-1354548110
 # XXX: Upgrade to 0.11.0 blocked by https://github.com/rust-cross/cargo-zigbuild/issues/162
 ARG ZIG_VERSION=0.9.1