diff --git a/svn/local.py b/svn/local.py
index 686063b..ffb6497 100644
--- a/svn/local.py
+++ b/svn/local.py
@@ -116,3 +116,29 @@ def remove(self, rel_path, do_keep_local=False, do_force=False):
         self.run_command(
             'rm',
             args)
+
+    def lock(self, rel_filepaths=[], do_force=False):
+        args = []
+
+        if do_force is True:
+            args.append('--force')
+
+        args += rel_filepaths
+
+        self.run_command(
+            'lock',
+            args,
+            wd=self.path)
+
+    def unlock(self, rel_filepaths=[], do_force=False):
+        args = []
+
+        if do_force is True:
+            args.append('--force')
+
+        args += rel_filepaths
+
+        self.run_command(
+            'unlock',
+            args,
+            wd=self.path)
diff --git a/svn/resources/README.md b/svn/resources/README.md
index d8b6aad..1eb338e 100644
--- a/svn/resources/README.md
+++ b/svn/resources/README.md
@@ -25,6 +25,8 @@ Functions currently implemented:
 - update
 - cleanup
 - remove (i.e. rm, del, delete)
+- lock
+- unlock
 
 In addition, there is also an "admin" class (`svn.admin.Admin`) that provides a
 `create` method with which to create repositories.
diff --git a/tests/test_local.py b/tests/test_local.py
index 445f4b8..68db5a3 100644
--- a/tests/test_local.py
+++ b/tests/test_local.py
@@ -87,3 +87,10 @@ def test_cleanup(self):
         with svn.test_support.temp_repo():
             with svn.test_support.temp_checkout() as (_, lc):
                 lc.cleanup()
+
+    def test_lock(self):
+        with svn.test_support.temp_repo():
+            with svn.test_support.temp_checkout() as (_, lc):
+                svn.test_support.populate_bigger_file_changes1()
+                lc.lock(['committed_unchanged'])
+                lc.unlock(['committed_unchanged'])