diff --git a/CHANGELOG.md b/CHANGELOG.md
index 003c1c78a..09afaa86a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,11 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [Unreleased]
+
+### Fixed
+- Respect the lockfile [#948](https://github.com/paritytech/cargo-contract/pull/948)
+
 ## [2.0.0-rc.1] - 2023-02-01
 Second release candidate compatible with `ink! 4.0.0-rc`.
 
diff --git a/crates/build/src/workspace/mod.rs b/crates/build/src/workspace/mod.rs
index e41d87f40..a51847fd8 100644
--- a/crates/build/src/workspace/mod.rs
+++ b/crates/build/src/workspace/mod.rs
@@ -200,7 +200,7 @@ impl Workspace {
             .tempdir()?;
         tracing::debug!("Using temp workspace at '{}'", tmp_dir.path().display());
         let new_paths = self.write(&tmp_dir)?;
-        let root_manifest_path = new_paths
+        let tmp_root_manifest_path = new_paths
             .iter()
             .find_map(|(pid, path)| {
                 if *pid == self.root_package {
@@ -210,6 +210,21 @@ impl Workspace {
                 }
             })
             .expect("root package should be a member of the temp workspace");
-        f(root_manifest_path)
+
+        // copy the `Cargo.lock` file
+        let src_lockfile = self.workspace_root.clone().join("Cargo.lock");
+        let dest_lockfile = tmp_root_manifest_path
+            .absolute_directory()?
+            .join("Cargo.lock");
+        if src_lockfile.exists() {
+            tracing::debug!(
+                "Copying '{}' to ' '{}'",
+                src_lockfile.display(),
+                dest_lockfile.display()
+            );
+            std::fs::copy(src_lockfile, dest_lockfile)?;
+        }
+
+        f(tmp_root_manifest_path)
     }
 }