diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b7332527..67816068 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -33,14 +33,14 @@ jobs:
       - name: Setup Yarn cache - submodule "thirdparty/account-abstraction"
         uses: actions/setup-node@v3
         with:
-          node-version: '14'
+          node-version: '16.17'
           cache: 'yarn'
           cache-dependency-path: crates/contracts/thirdparty/account-abstraction
 
       - name: Setup Yarn cache - submodule "thirdparty/bundler"
         uses: actions/setup-node@v3
         with:
-          node-version: '14'
+          node-version: '16.17'
           cache: 'yarn'
           cache-dependency-path: tests/thirdparty/bundler
       
diff --git a/Cargo.toml b/Cargo.toml
index 56d65b4e..4a5123ba 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -12,13 +12,17 @@ members = [
 ]
 default-members = ["bin/silius"]
 
+# Explicitly set the resolver to version 2, which is the default for packages with edition >= 2021
+# https://doc.rust-lang.org/edition-guide/rust-2021/default-cargo-resolver.html
+resolver = "2"
+
 [workspace.package]
 authors = ["Vid Kersic <vid.kersic@yahoo.com>"]
 version = "0.3.0-alpha"
 edition = "2021"
 license = "MIT OR Apache-2.0"
 repository = "https://github.com/silius-rs/silius"
-rust-version = "1.71.1"
+rust-version = "1.73.0"
 
 [workspace.dependencies]
 async-stream = "0.3.5"
diff --git a/Dockerfile b/Dockerfile
index 18dd0a09..eaed4349 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,10 +1,12 @@
 # build
 FROM ubuntu:18.04 AS builder
 
-RUN apt-get update && apt-get -y upgrade && apt-get install -y build-essential software-properties-common curl git clang pkg-config libclang-dev libssl-dev
+RUN apt-get update && apt-get -y upgrade && apt-get install -y build-essential software-properties-common ca-certificates curl gnupg git clang pkg-config libclang-dev libssl-dev
 RUN add-apt-repository ppa:ethereum/ethereum && apt-get update && apt-get install -y solc
 
-RUN curl -sL https://deb.nodesource.com/setup_14.x | sh -
+RUN mkdir -p /etc/apt/keyrings
+RUN curl -fsSL https://deb.nodesource.com/gpgkey/nodesource-repo.gpg.key | gpg --dearmor -o /etc/apt/keyrings/nodesource.gpg
+RUN echo "deb [signed-by=/etc/apt/keyrings/nodesource.gpg] https://deb.nodesource.com/node_16.x nodistro main" | tee /etc/apt/sources.list.d/nodesource.list
 RUN curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | apt-key add -
 RUN echo "deb https://dl.yarnpkg.com/debian/ stable main" | tee /etc/apt/sources.list.d/yarn.list
 
@@ -23,7 +25,7 @@ RUN make setup-thirdparty
 RUN make build
 
 # run
-FROM frolvlad/alpine-glibc
+FROM frolvlad/alpine-glibc:alpine-3.17
 
 RUN mkdir -p /data/silius
 
@@ -33,6 +35,6 @@ COPY --from=builder /silius/target/release/silius /usr/local/bin/silius
 
 EXPOSE 3000 3001
 
-ENTRYPOINT ["usr/local/bin/silius"]
+ENTRYPOINT ["/usr/local/bin/silius"]
 
 LABEL org.opencontainers.image.source=https://github.com/silius-rs/silius
diff --git a/README.md b/README.md
index d21e4cbd..46885831 100644
--- a/README.md
+++ b/README.md
@@ -22,7 +22,7 @@ For more information: https://hackmd.io/@Vid201/aa-bundler-rust
 
 <b>Prerequisites:</b>
 
-Rust version: 1.71.1
+Rust version: 1.73.0
 
 1. `libclang-dev`, `pkg-config` and `libssl-dev` on Debian/Ubuntu.
 2. Ethereum execution client JSON-RPC API with enabled [`debug_traceCall`](https://geth.ethereum.org/docs/interacting-with-geth/rpc/ns-debug#debug_tracecall). For production, you can use [Geth](https://github.com/ethereum/go-ethereum) or [Erigon](https://github.com/ledgerwatch/erigon). For testing, we are using Geth dev mode (tested with [v1.12.0](https://github.com/ethereum/go-ethereum/releases/tag/v1.12.0)); so you need to install [Geth](https://geth.ethereum.org/docs/getting-started/installing-geth) for running tests.
diff --git a/bundler-spec-tests/launcher.sh b/bundler-spec-tests/launcher.sh
index 36dfe3be..09d03b04 100755
--- a/bundler-spec-tests/launcher.sh
+++ b/bundler-spec-tests/launcher.sh
@@ -10,6 +10,7 @@ case $1 in
 
  start)
 	docker-compose up -d
+    sleep 2
     silius bundler \
         --verbosity 4 \
         --eth-client-address http://127.0.0.1:8545 \