diff --git a/README.md b/README.md
index 597c09d..148a4fa 100644
--- a/README.md
+++ b/README.md
@@ -144,6 +144,9 @@ Options:
 - `--quick` skips running `poetry install --remove-untracked` before running the checks.
   - **v3.0.30**: You can now customize which checks to run when `--quick` is specified. See the [quick](#configuration) configuration option.
 - `--no-github-step-report` can be used to disable Step Report generation when running in a GitHub context.
+- `--extra <extra>` *(v3.1.1)* will install the specified extra(s) for this run. Can be specified multiple times.
+- `--all-extras` *(v3.1.1)* will install all extras for this run.
+- `--no-extras` *(v3.1.1)* will not install any extra for this run.
 
 The configuration for this feature is explained in more details in the [runners](#runners-stew-ci) section.
 
@@ -231,7 +234,9 @@ quick = {}
 - **build-dependencies**: You can specify additional dependencies to be installed during `stew build`.
   - The format is the same as poetry dependencies: `name = "version"` or `name = { version = "version", ... }`
 - **extras**: A list of extras to install during `stew build` and `stew ci`.
+  - *(v3.1.1)* Can be specified at execution time with `stew ci --extra <this> --extra <that>`.  
 - **all-extras**: If true, all extras will be installed during `stew build` and `stew ci`. Overrides the `extras` list.
+  - *(v3.1.1)* Can be specified at execution time with `stew ci --all-extras` and `stew ci --no-extras`. 
 - **quick**: *(v3.0.30)* Controls which checks are skipped when calling `stew ci --quick`. 
   - The format is a dictionary with either the `check` or `skip` key, followed by a list of runners.
   - The behavior is identical to the `--check` and `--skip` options.
diff --git a/coveo_stew/commands.py b/coveo_stew/commands.py
index bb29cee..2d2bf3e 100644
--- a/coveo_stew/commands.py
+++ b/coveo_stew/commands.py
@@ -323,6 +323,9 @@ def refresh(project_name: str = None, exact_match: bool = False, verbose: bool =
 )
 @click.option("--parallel/--sequential", default=True)
 @click.option("--github-step-report", is_flag=True, default=False, envvar="GITHUB_ACTIONS")
+@click.option("--extra", multiple=True, default=())
+@click.option("--no-extras", is_flag=True, default=False)
+@click.option("--all-extras", is_flag=True, default=False)
 def ci(
     project_name: str = None,
     exact_match: bool = False,
@@ -333,6 +336,9 @@ def ci(
     quick: bool = False,
     parallel: bool = True,
     github_step_report: bool = False,
+    extra: Tuple[str, ...] = (),
+    no_extras: bool = False,
+    all_extras: bool = False,
 ) -> None:
     failures = defaultdict(list)
     try:
@@ -345,6 +351,8 @@ def ci(
                 check += tuple(project.options.quick.get("check", ()))
                 skip += tuple(project.options.quick.get("skip", ()))
 
+            project.overrides_from_cli(extras=extra, no_extras=no_extras, all_extras=all_extras)
+
             if (
                 overall_result := project.launch_continuous_integration(
                     auto_fix=fix,
diff --git a/coveo_stew/stew.py b/coveo_stew/stew.py
index af6059c..f8a27c4 100644
--- a/coveo_stew/stew.py
+++ b/coveo_stew/stew.py
@@ -31,7 +31,7 @@
 
 from coveo_stew.ci.runner_status import RunnerStatus
 from coveo_stew.environment import PythonEnvironment, PythonTool, find_python_tool
-from coveo_stew.exceptions import NotAPoetryProject, StewException
+from coveo_stew.exceptions import NotAPoetryProject, StewException, UsageError
 from coveo_stew.metadata.poetry_api import PoetryAPI
 from coveo_stew.metadata.python_api import PythonFile
 from coveo_stew.metadata.stew_api import StewPackage
@@ -117,6 +117,25 @@ def _virtual_environments_cache(self) -> List[PythonEnvironment]:
 
         return cache
 
+    def overrides_from_cli(
+        self, extras: Tuple[str, ...] = (), no_extras: bool = False, all_extras: bool = False
+    ) -> None:
+        """Overrides the project's options with the CLI arguments."""
+        if no_extras and (extras or all_extras):
+            raise UsageError("Cannot use --no-extras with --extras or --all-extras.")
+        if all_extras and (extras or no_extras):
+            raise UsageError("Cannot use --all-extras with --extras or --no-extras.")
+
+        if extras:
+            self.options.extras = list(extras)
+            self.options.all_extras = False
+        if no_extras:
+            self.options.extras = []
+            self.options.all_extras = False
+        if all_extras:
+            self.options.extras = []
+            self.options.all_extras = True
+
     def relative_path(self, path: Path) -> Path:
         """returns the relative path of a path vs the project folder."""
         return path.relative_to(self.project_path)