diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 264652332..3f1f2f667 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -13,6 +13,8 @@ concurrency:
 env:
   GO_VERSION: "1.22" # https://go.dev/dl/
   STRINGER_VERSION: "0.26.0" # https://pkg.go.dev/golang.org/x/tools/cmd/stringer?tab=versions
+  # Go bindings.
+  GO_ETHEREUM_VERSION: "1.14.11+build30352+jammy" # https://github.com/ethereum/go-ethereum/releases and https://launchpad.net/~ethereum/+archive/ubuntu/ethereum
   # Protoc dependencies.
   PROTOC_VERSION: "28.2" # https://github.com/protocolbuffers/protobuf/releases
   PROTOC_GEN_GO_VERSION: "1.35.1" # https://pkg.go.dev/google.golang.org/protobuf/cmd/protoc-gen-go?tab=versions
@@ -66,7 +68,7 @@ jobs:
         run: |
           sudo add-apt-repository ppa:ethereum/ethereum
           sudo apt-get update
-          sudo apt-get install ethereum
+          sudo apt-get install ethereum=${{ env.GO_ETHEREUM_VERSION }}
           abigen --version
       - name: Install foundry
         uses: foundry-rs/foundry-toolchain@v1