diff --git a/Dockerfile b/Dockerfile
index 28c206a..95d8807 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -14,13 +14,13 @@ ENV UV_LINK_MODE=copy
 RUN --mount=type=cache,target=/root/.cache/uv \
     --mount=type=bind,source=uv.lock,target=uv.lock \
     --mount=type=bind,source=pyproject.toml,target=pyproject.toml \
-    uv sync --frozen --no-install-project --no-dev
+    uv sync --locked --no-install-project --no-dev
 
 # Then, add the rest of the project source code and install it
 # Installing separately from its dependencies allows optimal layer caching
 COPY . /app
 RUN --mount=type=cache,target=/root/.cache/uv \
-    uv sync --frozen --no-dev
+    uv sync --locked --no-dev
 
 # Place executables in the environment at the front of the path
 ENV PATH="/app/.venv/bin:$PATH"
diff --git a/README.md b/README.md
index 3659970..0504590 100644
--- a/README.md
+++ b/README.md
@@ -91,7 +91,7 @@ dependency, includes FastAPI as a dependency, and defines a `hello` entrypoint f
 To check that the environment is up-to-date after image builds:
 
 ```console
-$ ./run.sh uv sync --frozen
+$ ./run.sh uv sync --locked
 Audited 2 packages ...
 ```
 
diff --git a/multistage.Dockerfile b/multistage.Dockerfile
index 26389d2..8f0d0fa 100644
--- a/multistage.Dockerfile
+++ b/multistage.Dockerfile
@@ -15,10 +15,10 @@ WORKDIR /app
 RUN --mount=type=cache,target=/root/.cache/uv \
     --mount=type=bind,source=uv.lock,target=uv.lock \
     --mount=type=bind,source=pyproject.toml,target=pyproject.toml \
-    uv sync --frozen --no-install-project --no-dev
+    uv sync --locked --no-install-project --no-dev
 COPY . /app
 RUN --mount=type=cache,target=/root/.cache/uv \
-    uv sync --frozen --no-dev
+    uv sync --locked --no-dev
 
 
 # Then, use a final image without uv
diff --git a/standalone.Dockerfile b/standalone.Dockerfile
index bfa26ae..24fb8db 100644
--- a/standalone.Dockerfile
+++ b/standalone.Dockerfile
@@ -17,10 +17,10 @@ WORKDIR /app
 RUN --mount=type=cache,target=/root/.cache/uv \
     --mount=type=bind,source=uv.lock,target=uv.lock \
     --mount=type=bind,source=pyproject.toml,target=pyproject.toml \
-    uv sync --frozen --no-install-project --no-dev
+    uv sync --locked --no-install-project --no-dev
 COPY . /app
 RUN --mount=type=cache,target=/root/.cache/uv \
-    uv sync --frozen --no-dev
+    uv sync --locked --no-dev
 
 # Then, use a final image without uv
 FROM debian:bookworm-slim