diff --git a/src/repo2wasm/binder.py b/src/repo2wasm/binder.py
index 7f72cc9..36238a3 100644
--- a/src/repo2wasm/binder.py
+++ b/src/repo2wasm/binder.py
@@ -28,7 +28,7 @@ def find_configuration_file(path_to_repository):
     raise RuntimeError("Configuration file not found.")
 
 
-def get_buildpack(path_to_repository, ide, output_dir, forgiving=False):
+def get_buildpack(path_to_repository, ide, output_dir, forgiving=False, ignore=[]):
     configuration_file_path = find_configuration_file(path_to_repository)
 
     configuration_file = os.path.basename(configuration_file_path)
@@ -39,7 +39,12 @@ def get_buildpack(path_to_repository, ide, output_dir, forgiving=False):
     ) in ALLOWED_BINDER_CONFIGURATION_MAPPING.items():
         if configuration_file == buildpack_configuration_file:
             return BuildPack(
-                path_to_repository, configuration_file_path, ide, output_dir, forgiving
+                path_to_repository,
+                configuration_file_path,
+                ide,
+                output_dir,
+                forgiving=forgiving,
+                ignore=ignore,
             )
 
     raise RuntimeError("Build pack not found.")
diff --git a/src/repo2wasm/buildpacks/conda.py b/src/repo2wasm/buildpacks/conda.py
index 5e3b3f3..6198a7c 100644
--- a/src/repo2wasm/buildpacks/conda.py
+++ b/src/repo2wasm/buildpacks/conda.py
@@ -14,9 +14,22 @@
 
 class CondaBuildPack(BaseBuildPack):
     def __init__(
-        self, repository, configuration_file, ide, output_dir, forgiving=False
+        self,
+        repository,
+        configuration_file,
+        ide,
+        output_dir,
+        forgiving=False,
+        ignore=[],
     ):
-        super().__init__(repository, configuration_file, ide, output_dir, forgiving)
+        super().__init__(
+            repository,
+            configuration_file,
+            ide,
+            output_dir,
+            forgiving=forgiving,
+            ignore=ignore,
+        )
 
         logger.debug("Configuration file: %s", self.configuration_file)
 
diff --git a/src/repo2wasm/buildpacks/install.py b/src/repo2wasm/buildpacks/install.py
index 5b456ac..f0ea592 100644
--- a/src/repo2wasm/buildpacks/install.py
+++ b/src/repo2wasm/buildpacks/install.py
@@ -20,9 +20,22 @@ def clean_line_from_install_r(line):
 
 class InstallBuildPack(BaseBuildPack):
     def __init__(
-        self, repository, configuration_file, ide, output_dir, forgiving=False
+        self,
+        repository,
+        configuration_file,
+        ide,
+        output_dir,
+        forgiving=False,
+        ignore=[],
     ):
-        super().__init__(repository, configuration_file, ide, output_dir, forgiving)
+        super().__init__(
+            repository,
+            configuration_file,
+            ide,
+            output_dir,
+            forgiving=forgiving,
+            ignore=ignore,
+        )
 
         logger.debug("Configuration file: %s", self.configuration_file)
 
diff --git a/src/repo2wasm/buildpacks/requirements.py b/src/repo2wasm/buildpacks/requirements.py
index 5572ede..58328dc 100644
--- a/src/repo2wasm/buildpacks/requirements.py
+++ b/src/repo2wasm/buildpacks/requirements.py
@@ -13,9 +13,22 @@
 
 class RequirementsBuildPack(BaseBuildPack):
     def __init__(
-        self, repository, configuration_file, ide, output_dir, forgiving=False
+        self,
+        repository,
+        configuration_file,
+        ide,
+        output_dir,
+        forgiving=False,
+        ignore=[],
     ):
-        super().__init__(repository, configuration_file, ide, output_dir, forgiving)
+        super().__init__(
+            repository,
+            configuration_file,
+            ide,
+            output_dir,
+            forgiving=forgiving,
+            ignore=ignore,
+        )
 
         logger.debug("Configuration file: %s", self.configuration_file)
 
diff --git a/src/repo2wasm/cli.py b/src/repo2wasm/cli.py
index 68c2792..64135fd 100644
--- a/src/repo2wasm/cli.py
+++ b/src/repo2wasm/cli.py
@@ -27,6 +27,13 @@ def cli():
         help="Ignore the provided version number given that only a few versions are available in Wasm.",
     )
 
+    parser.add_argument(
+        "-i",
+        "--ignore",
+        nargs="*",
+        help="Path regular expressions to not include as contents.",
+    )
+
     parser.add_argument(
         "-o",
         "--output-dir",
@@ -78,6 +85,7 @@ def cli():
 
     repo2wasm(
         args.repository,
+        ignore=(args.ignore if args.ignore is not None else []),
         ide=args.ide,
         output_dir=args.output_dir,
         forgiving=args.forgiving,
diff --git a/src/repo2wasm/repo2wasm.py b/src/repo2wasm/repo2wasm.py
index 1277471..4a0a2a7 100644
--- a/src/repo2wasm/repo2wasm.py
+++ b/src/repo2wasm/repo2wasm.py
@@ -50,7 +50,9 @@ def fetch_repository(repository):
     return checkout_path
 
 
-def repo2wasm(repository, ide="jupyterlab", output_dir="public", forgiving=False):
+def repo2wasm(
+    repository, ignore=[], ide="jupyterlab", output_dir="public", forgiving=False
+):
     output_dir_absolute_path = os.path.abspath(output_dir)
 
     logger.info("Repository: %s", repository)
@@ -59,7 +61,9 @@ def repo2wasm(repository, ide="jupyterlab", output_dir="public", forgiving=False
 
     checkout_path = fetch_repository(repository)
     try:
-        buildpack = get_buildpack(checkout_path, ide, output_dir, forgiving)
+        buildpack = get_buildpack(
+            checkout_path, ide, output_dir, forgiving=forgiving, ignore=ignore
+        )
 
         buildpack.doit_run("build")
         buildpack.doit_run("post_build")