diff --git a/.github/.OwlBot.lock.yaml b/.github/.OwlBot.lock.yaml
index 58fcbee..c701359 100644
--- a/.github/.OwlBot.lock.yaml
+++ b/.github/.OwlBot.lock.yaml
@@ -13,5 +13,5 @@
 # limitations under the License.
 docker:
   image: gcr.io/cloud-devrel-public-resources/owlbot-python:latest
-  digest: sha256:c8878270182edaab99f2927969d4f700c3af265accd472c3425deedff2b7fd93
-# created: 2022-07-14T01:58:16.015625351Z
+  digest: sha256:c6c965a4bf40c19011b11f87dbc801a66d3a23fbc6704102be064ef31c51f1c3
+# created: 2022-08-09T15:58:56.463048506Z
diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index b46d730..7092a13 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -10,7 +10,7 @@ jobs:
     - name: Checkout
       uses: actions/checkout@v3
     - name: Setup Python
-      uses: actions/setup-python@v3
+      uses: actions/setup-python@v4
       with:
         python-version: "3.10"
     - name: Install nox
@@ -26,7 +26,7 @@ jobs:
     - name: Checkout
       uses: actions/checkout@v3
     - name: Setup Python
-      uses: actions/setup-python@v3
+      uses: actions/setup-python@v4
       with:
         python-version: "3.10"
     - name: Install nox
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index f512a49..d2aee5b 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -10,7 +10,7 @@ jobs:
     - name: Checkout
       uses: actions/checkout@v3
     - name: Setup Python
-      uses: actions/setup-python@v3
+      uses: actions/setup-python@v4
       with:
         python-version: "3.10"
     - name: Install nox
diff --git a/.github/workflows/unittest.yml b/.github/workflows/unittest.yml
index f76daeb..24e4655 100644
--- a/.github/workflows/unittest.yml
+++ b/.github/workflows/unittest.yml
@@ -13,7 +13,7 @@ jobs:
     - name: Checkout
       uses: actions/checkout@v3
     - name: Setup Python
-      uses: actions/setup-python@v3
+      uses: actions/setup-python@v4
       with:
         python-version: ${{ matrix.python }}
     - name: Install nox
@@ -39,7 +39,7 @@ jobs:
     - name: Checkout
       uses: actions/checkout@v3
     - name: Setup Python
-      uses: actions/setup-python@v3
+      uses: actions/setup-python@v4
       with:
         python-version: "3.10"
     - name: Install coverage
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1f85441..a36f597 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Changelog
 
+## [1.1.1](https://github.com/googleapis/python-dataplex/compare/v1.1.0...v1.1.1) (2022-08-15)
+
+
+### Bug Fixes
+
+* **deps:** allow protobuf < 5.0.0 ([#84](https://github.com/googleapis/python-dataplex/issues/84)) ([747f4d9](https://github.com/googleapis/python-dataplex/commit/747f4d9fe8d4dbfeaf5576197c495edb6392a89f))
+* **deps:** require proto-plus >= 1.22.0 ([747f4d9](https://github.com/googleapis/python-dataplex/commit/747f4d9fe8d4dbfeaf5576197c495edb6392a89f))
+
 ## [1.1.0](https://github.com/googleapis/python-dataplex/compare/v1.0.1...v1.1.0) (2022-07-15)
 
 
diff --git a/google/cloud/dataplex_v1/services/dataplex_service/async_client.py b/google/cloud/dataplex_v1/services/dataplex_service/async_client.py
index 879df34..eded75d 100644
--- a/google/cloud/dataplex_v1/services/dataplex_service/async_client.py
+++ b/google/cloud/dataplex_v1/services/dataplex_service/async_client.py
@@ -573,9 +573,6 @@ async def sample_delete_lake():
 
                       }
 
-                   The JSON representation for Empty is empty JSON
-                   object {}.
-
         """
         # Create or coerce a protobuf request object.
         # Quick check: If we got a request object, we should *not* have
@@ -1313,9 +1310,6 @@ async def sample_delete_zone():
 
                       }
 
-                   The JSON representation for Empty is empty JSON
-                   object {}.
-
         """
         # Create or coerce a protobuf request object.
         # Quick check: If we got a request object, we should *not* have
@@ -2033,9 +2027,6 @@ async def sample_delete_asset():
 
                       }
 
-                   The JSON representation for Empty is empty JSON
-                   object {}.
-
         """
         # Create or coerce a protobuf request object.
         # Quick check: If we got a request object, we should *not* have
@@ -2744,9 +2735,6 @@ async def sample_delete_task():
 
                       }
 
-                   The JSON representation for Empty is empty JSON
-                   object {}.
-
         """
         # Create or coerce a protobuf request object.
         # Quick check: If we got a request object, we should *not* have
@@ -3639,9 +3627,6 @@ async def sample_delete_environment():
 
                       }
 
-                   The JSON representation for Empty is empty JSON
-                   object {}.
-
         """
         # Create or coerce a protobuf request object.
         # Quick check: If we got a request object, we should *not* have
diff --git a/google/cloud/dataplex_v1/services/dataplex_service/client.py b/google/cloud/dataplex_v1/services/dataplex_service/client.py
index c5e2bd6..7a8755f 100644
--- a/google/cloud/dataplex_v1/services/dataplex_service/client.py
+++ b/google/cloud/dataplex_v1/services/dataplex_service/client.py
@@ -962,9 +962,6 @@ def sample_delete_lake():
 
                       }
 
-                   The JSON representation for Empty is empty JSON
-                   object {}.
-
         """
         # Create or coerce a protobuf request object.
         # Quick check: If we got a request object, we should *not* have
@@ -1675,9 +1672,6 @@ def sample_delete_zone():
 
                       }
 
-                   The JSON representation for Empty is empty JSON
-                   object {}.
-
         """
         # Create or coerce a protobuf request object.
         # Quick check: If we got a request object, we should *not* have
@@ -2368,9 +2362,6 @@ def sample_delete_asset():
 
                       }
 
-                   The JSON representation for Empty is empty JSON
-                   object {}.
-
         """
         # Create or coerce a protobuf request object.
         # Quick check: If we got a request object, we should *not* have
@@ -3052,9 +3043,6 @@ def sample_delete_task():
 
                       }
 
-                   The JSON representation for Empty is empty JSON
-                   object {}.
-
         """
         # Create or coerce a protobuf request object.
         # Quick check: If we got a request object, we should *not* have
@@ -3911,9 +3899,6 @@ def sample_delete_environment():
 
                       }
 
-                   The JSON representation for Empty is empty JSON
-                   object {}.
-
         """
         # Create or coerce a protobuf request object.
         # Quick check: If we got a request object, we should *not* have
diff --git a/noxfile.py b/noxfile.py
index 94504ea..9af13b0 100644
--- a/noxfile.py
+++ b/noxfile.py
@@ -334,7 +334,8 @@ def prerelease_deps(session):
 
     # Install all dependencies
     session.install("-e", ".[all, tests, tracing]")
-    session.install(*UNIT_TEST_STANDARD_DEPENDENCIES)
+    unit_deps_all = UNIT_TEST_STANDARD_DEPENDENCIES + UNIT_TEST_EXTERNAL_DEPENDENCIES
+    session.install(*unit_deps_all)
     system_deps_all = (
         SYSTEM_TEST_STANDARD_DEPENDENCIES
         + SYSTEM_TEST_EXTERNAL_DEPENDENCIES
@@ -363,12 +364,6 @@ def prerelease_deps(session):
 
     session.install(*constraints_deps)
 
-    if os.path.exists("samples/snippets/requirements.txt"):
-        session.install("-r", "samples/snippets/requirements.txt")
-
-    if os.path.exists("samples/snippets/requirements-test.txt"):
-        session.install("-r", "samples/snippets/requirements-test.txt")
-
     prerel_deps = [
         "protobuf",
         # dependency of grpc
@@ -405,11 +400,19 @@ def prerelease_deps(session):
     system_test_folder_path = os.path.join("tests", "system")
 
     # Only run system tests if found.
-    if os.path.exists(system_test_path) or os.path.exists(system_test_folder_path):
-        session.run("py.test", "tests/system")
-
-    snippets_test_path = os.path.join("samples", "snippets")
-
-    # Only run samples tests if found.
-    if os.path.exists(snippets_test_path):
-        session.run("py.test", "samples/snippets")
+    if os.path.exists(system_test_path):
+        session.run(
+            "py.test",
+            "--verbose",
+            f"--junitxml=system_{session.python}_sponge_log.xml",
+            system_test_path,
+            *session.posargs,
+        )
+    if os.path.exists(system_test_folder_path):
+        session.run(
+            "py.test",
+            "--verbose",
+            f"--junitxml=system_{session.python}_sponge_log.xml",
+            system_test_folder_path,
+            *session.posargs,
+        )
diff --git a/setup.py b/setup.py
index caf4abd..05fa32a 100644
--- a/setup.py
+++ b/setup.py
@@ -22,12 +22,12 @@
 name = "google-cloud-dataplex"
 description = "Dataplex API client library"
 url = "https://github.com/googleapis/python-dataplex"
-version = "1.1.0"
+version = "1.1.1"
 release_status = "Development Status :: 5 - Production/Stable"
 dependencies = [
     "google-api-core[grpc] >= 1.32.0, <3.0.0dev,!=2.0.*,!=2.1.*,!=2.2.*,!=2.3.*,!=2.4.*,!=2.5.*,!=2.6.*,!=2.7.*",
-    "proto-plus >= 1.15.0, <2.0.0dev",
-    "protobuf >= 3.19.0, <4.0.0dev",
+    "proto-plus >= 1.22.0, <2.0.0dev",
+    "protobuf >= 3.19.0, <5.0.0dev",
     "grpc-google-iam-v1 >=0.12.4, <1.0.0dev",
 ]
 
diff --git a/testing/constraints-3.7.txt b/testing/constraints-3.7.txt
index 1e04987..461fa1f 100644
--- a/testing/constraints-3.7.txt
+++ b/testing/constraints-3.7.txt
@@ -5,6 +5,6 @@
 # e.g., if setup.py has "google-cloud-foo >= 1.14.0, < 2.0.0dev",
 # Then this file should have google-cloud-foo==1.14.0
 google-api-core==1.32.0
-proto-plus==1.15.0
+proto-plus==1.22.0
 protobuf==3.19.0
 grpc-google-iam-v1==0.12.4
diff --git a/tests/unit/gapic/dataplex_v1/test_content_service.py b/tests/unit/gapic/dataplex_v1/test_content_service.py
index 48b62ca..1a9e157 100644
--- a/tests/unit/gapic/dataplex_v1/test_content_service.py
+++ b/tests/unit/gapic/dataplex_v1/test_content_service.py
@@ -3398,7 +3398,7 @@ def test_delete_operation(transport: str = "grpc"):
 
 
 @pytest.mark.asyncio
-async def test_delete_operation(transport: str = "grpc"):
+async def test_delete_operation_async(transport: str = "grpc"):
     client = ContentServiceAsyncClient(
         credentials=ga_credentials.AnonymousCredentials(),
         transport=transport,
@@ -3537,7 +3537,7 @@ def test_cancel_operation(transport: str = "grpc"):
 
 
 @pytest.mark.asyncio
-async def test_cancel_operation(transport: str = "grpc"):
+async def test_cancel_operation_async(transport: str = "grpc"):
     client = ContentServiceAsyncClient(
         credentials=ga_credentials.AnonymousCredentials(),
         transport=transport,
@@ -3676,7 +3676,7 @@ def test_get_operation(transport: str = "grpc"):
 
 
 @pytest.mark.asyncio
-async def test_get_operation(transport: str = "grpc"):
+async def test_get_operation_async(transport: str = "grpc"):
     client = ContentServiceAsyncClient(
         credentials=ga_credentials.AnonymousCredentials(),
         transport=transport,
@@ -3821,7 +3821,7 @@ def test_list_operations(transport: str = "grpc"):
 
 
 @pytest.mark.asyncio
-async def test_list_operations(transport: str = "grpc"):
+async def test_list_operations_async(transport: str = "grpc"):
     client = ContentServiceAsyncClient(
         credentials=ga_credentials.AnonymousCredentials(),
         transport=transport,
@@ -3966,7 +3966,7 @@ def test_list_locations(transport: str = "grpc"):
 
 
 @pytest.mark.asyncio
-async def test_list_locations(transport: str = "grpc"):
+async def test_list_locations_async(transport: str = "grpc"):
     client = ContentServiceAsyncClient(
         credentials=ga_credentials.AnonymousCredentials(),
         transport=transport,
diff --git a/tests/unit/gapic/dataplex_v1/test_dataplex_service.py b/tests/unit/gapic/dataplex_v1/test_dataplex_service.py
index b1e6d6e..f11804e 100644
--- a/tests/unit/gapic/dataplex_v1/test_dataplex_service.py
+++ b/tests/unit/gapic/dataplex_v1/test_dataplex_service.py
@@ -11263,7 +11263,7 @@ def test_delete_operation(transport: str = "grpc"):
 
 
 @pytest.mark.asyncio
-async def test_delete_operation(transport: str = "grpc"):
+async def test_delete_operation_async(transport: str = "grpc"):
     client = DataplexServiceAsyncClient(
         credentials=ga_credentials.AnonymousCredentials(),
         transport=transport,
@@ -11402,7 +11402,7 @@ def test_cancel_operation(transport: str = "grpc"):
 
 
 @pytest.mark.asyncio
-async def test_cancel_operation(transport: str = "grpc"):
+async def test_cancel_operation_async(transport: str = "grpc"):
     client = DataplexServiceAsyncClient(
         credentials=ga_credentials.AnonymousCredentials(),
         transport=transport,
@@ -11541,7 +11541,7 @@ def test_get_operation(transport: str = "grpc"):
 
 
 @pytest.mark.asyncio
-async def test_get_operation(transport: str = "grpc"):
+async def test_get_operation_async(transport: str = "grpc"):
     client = DataplexServiceAsyncClient(
         credentials=ga_credentials.AnonymousCredentials(),
         transport=transport,
@@ -11686,7 +11686,7 @@ def test_list_operations(transport: str = "grpc"):
 
 
 @pytest.mark.asyncio
-async def test_list_operations(transport: str = "grpc"):
+async def test_list_operations_async(transport: str = "grpc"):
     client = DataplexServiceAsyncClient(
         credentials=ga_credentials.AnonymousCredentials(),
         transport=transport,
@@ -11831,7 +11831,7 @@ def test_list_locations(transport: str = "grpc"):
 
 
 @pytest.mark.asyncio
-async def test_list_locations(transport: str = "grpc"):
+async def test_list_locations_async(transport: str = "grpc"):
     client = DataplexServiceAsyncClient(
         credentials=ga_credentials.AnonymousCredentials(),
         transport=transport,
diff --git a/tests/unit/gapic/dataplex_v1/test_metadata_service.py b/tests/unit/gapic/dataplex_v1/test_metadata_service.py
index 7b7179c..39c6dfb 100644
--- a/tests/unit/gapic/dataplex_v1/test_metadata_service.py
+++ b/tests/unit/gapic/dataplex_v1/test_metadata_service.py
@@ -3965,7 +3965,7 @@ def test_delete_operation(transport: str = "grpc"):
 
 
 @pytest.mark.asyncio
-async def test_delete_operation(transport: str = "grpc"):
+async def test_delete_operation_async(transport: str = "grpc"):
     client = MetadataServiceAsyncClient(
         credentials=ga_credentials.AnonymousCredentials(),
         transport=transport,
@@ -4104,7 +4104,7 @@ def test_cancel_operation(transport: str = "grpc"):
 
 
 @pytest.mark.asyncio
-async def test_cancel_operation(transport: str = "grpc"):
+async def test_cancel_operation_async(transport: str = "grpc"):
     client = MetadataServiceAsyncClient(
         credentials=ga_credentials.AnonymousCredentials(),
         transport=transport,
@@ -4243,7 +4243,7 @@ def test_get_operation(transport: str = "grpc"):
 
 
 @pytest.mark.asyncio
-async def test_get_operation(transport: str = "grpc"):
+async def test_get_operation_async(transport: str = "grpc"):
     client = MetadataServiceAsyncClient(
         credentials=ga_credentials.AnonymousCredentials(),
         transport=transport,
@@ -4388,7 +4388,7 @@ def test_list_operations(transport: str = "grpc"):
 
 
 @pytest.mark.asyncio
-async def test_list_operations(transport: str = "grpc"):
+async def test_list_operations_async(transport: str = "grpc"):
     client = MetadataServiceAsyncClient(
         credentials=ga_credentials.AnonymousCredentials(),
         transport=transport,
@@ -4533,7 +4533,7 @@ def test_list_locations(transport: str = "grpc"):
 
 
 @pytest.mark.asyncio
-async def test_list_locations(transport: str = "grpc"):
+async def test_list_locations_async(transport: str = "grpc"):
     client = MetadataServiceAsyncClient(
         credentials=ga_credentials.AnonymousCredentials(),
         transport=transport,