diff --git a/.github/workflows/tests.yaml b/.github/workflows/tests.yaml
index 203388cdd4..c8e50ca9b8 100644
--- a/.github/workflows/tests.yaml
+++ b/.github/workflows/tests.yaml
@@ -446,15 +446,15 @@ jobs:
       - name: Install nox.
         run: |
             python -m pip install nox
-      - name: Run the prerelease_deps nox session
+      - name: Run the prerelease_deps and core_deps_from_source nox sessions
         # Exclude testing for asset which requires dependency google-cloud-org-policy
         # in order to run unit tests
         # See https://github.com/googleapis/gapic-generator-python/issues/1806
         run: |
-          nox -f tests/integration/goldens/credentials/noxfile.py -s prerelease_deps
-          nox -f tests/integration/goldens/eventarc/noxfile.py -s prerelease_deps
-          nox -f tests/integration/goldens/logging/noxfile.py -s prerelease_deps
-          nox -f tests/integration/goldens/redis/noxfile.py -s prerelease_deps
+          nox -f tests/integration/goldens/credentials/noxfile.py -s prerelease_deps core_deps_from_source
+          nox -f tests/integration/goldens/eventarc/noxfile.py -s prerelease_deps core_deps_from_source
+          nox -f tests/integration/goldens/logging/noxfile.py -s prerelease_deps core_deps_from_source
+          nox -f tests/integration/goldens/redis/noxfile.py -s prerelease_deps core_deps_from_source
   lint:
     runs-on: ubuntu-latest
     steps:
diff --git a/gapic/templates/noxfile.py.j2 b/gapic/templates/noxfile.py.j2
index c03635deb5..e940f7b9bf 100644
--- a/gapic/templates/noxfile.py.j2
+++ b/gapic/templates/noxfile.py.j2
@@ -610,10 +610,10 @@ def core_deps_from_source(session, protobuf_implementation):
     # the `prerel_deps` list in the `prerelease_deps` nox session should also be updated.
     core_dependencies_from_source = [        
         "googleapis-common-protos @ git+https://github.com/googleapis/google-cloud-python#egg=googleapis-common-protos&subdirectory=packages/googleapis-common-protos",
-        "google-api-core @ git+https://github.com/googleapis/python-api-core.git",
+        "google-api-core @ git+https://github.com/googleapis/google-cloud-python#egg=google-api-core&subdirectory=packages/google-api-core",
         "google-auth @ git+https://github.com/googleapis/google-auth-library-python.git",
         "grpc-google-iam-v1 @ git+https://github.com/googleapis/google-cloud-python#egg=grpc-google-iam-v1&subdirectory=packages/grpc-google-iam-v1",
-        "proto-plus @ git+https://github.com/googleapis/proto-plus-python.git",
+        "proto-plus @ git+https://github.com/googleapis/google-cloud-python#egg=proto-plus&subdirectory=packages/proto-plus",
     ]
 
     for dep in core_dependencies_from_source:
diff --git a/tests/integration/goldens/asset/noxfile.py b/tests/integration/goldens/asset/noxfile.py
index 3005dac3c7..566e8e9e09 100755
--- a/tests/integration/goldens/asset/noxfile.py
+++ b/tests/integration/goldens/asset/noxfile.py
@@ -603,10 +603,10 @@ def core_deps_from_source(session, protobuf_implementation):
     # the `prerel_deps` list in the `prerelease_deps` nox session should also be updated.
     core_dependencies_from_source = [
         "googleapis-common-protos @ git+https://github.com/googleapis/google-cloud-python#egg=googleapis-common-protos&subdirectory=packages/googleapis-common-protos",
-        "google-api-core @ git+https://github.com/googleapis/python-api-core.git",
+        "google-api-core @ git+https://github.com/googleapis/google-cloud-python#egg=google-api-core&subdirectory=packages/google-api-core",
         "google-auth @ git+https://github.com/googleapis/google-auth-library-python.git",
         "grpc-google-iam-v1 @ git+https://github.com/googleapis/google-cloud-python#egg=grpc-google-iam-v1&subdirectory=packages/grpc-google-iam-v1",
-        "proto-plus @ git+https://github.com/googleapis/proto-plus-python.git",
+        "proto-plus @ git+https://github.com/googleapis/google-cloud-python#egg=proto-plus&subdirectory=packages/proto-plus",
     ]
 
     for dep in core_dependencies_from_source:
diff --git a/tests/integration/goldens/credentials/noxfile.py b/tests/integration/goldens/credentials/noxfile.py
index 1b63a5d05d..29438a4060 100755
--- a/tests/integration/goldens/credentials/noxfile.py
+++ b/tests/integration/goldens/credentials/noxfile.py
@@ -603,10 +603,10 @@ def core_deps_from_source(session, protobuf_implementation):
     # the `prerel_deps` list in the `prerelease_deps` nox session should also be updated.
     core_dependencies_from_source = [
         "googleapis-common-protos @ git+https://github.com/googleapis/google-cloud-python#egg=googleapis-common-protos&subdirectory=packages/googleapis-common-protos",
-        "google-api-core @ git+https://github.com/googleapis/python-api-core.git",
+        "google-api-core @ git+https://github.com/googleapis/google-cloud-python#egg=google-api-core&subdirectory=packages/google-api-core",
         "google-auth @ git+https://github.com/googleapis/google-auth-library-python.git",
         "grpc-google-iam-v1 @ git+https://github.com/googleapis/google-cloud-python#egg=grpc-google-iam-v1&subdirectory=packages/grpc-google-iam-v1",
-        "proto-plus @ git+https://github.com/googleapis/proto-plus-python.git",
+        "proto-plus @ git+https://github.com/googleapis/google-cloud-python#egg=proto-plus&subdirectory=packages/proto-plus",
     ]
 
     for dep in core_dependencies_from_source:
diff --git a/tests/integration/goldens/eventarc/noxfile.py b/tests/integration/goldens/eventarc/noxfile.py
index 235454ee92..3da254f003 100755
--- a/tests/integration/goldens/eventarc/noxfile.py
+++ b/tests/integration/goldens/eventarc/noxfile.py
@@ -603,10 +603,10 @@ def core_deps_from_source(session, protobuf_implementation):
     # the `prerel_deps` list in the `prerelease_deps` nox session should also be updated.
     core_dependencies_from_source = [
         "googleapis-common-protos @ git+https://github.com/googleapis/google-cloud-python#egg=googleapis-common-protos&subdirectory=packages/googleapis-common-protos",
-        "google-api-core @ git+https://github.com/googleapis/python-api-core.git",
+        "google-api-core @ git+https://github.com/googleapis/google-cloud-python#egg=google-api-core&subdirectory=packages/google-api-core",
         "google-auth @ git+https://github.com/googleapis/google-auth-library-python.git",
         "grpc-google-iam-v1 @ git+https://github.com/googleapis/google-cloud-python#egg=grpc-google-iam-v1&subdirectory=packages/grpc-google-iam-v1",
-        "proto-plus @ git+https://github.com/googleapis/proto-plus-python.git",
+        "proto-plus @ git+https://github.com/googleapis/google-cloud-python#egg=proto-plus&subdirectory=packages/proto-plus",
     ]
 
     for dep in core_dependencies_from_source:
diff --git a/tests/integration/goldens/logging/noxfile.py b/tests/integration/goldens/logging/noxfile.py
index c2efe83be4..ebeacae6b8 100755
--- a/tests/integration/goldens/logging/noxfile.py
+++ b/tests/integration/goldens/logging/noxfile.py
@@ -603,10 +603,10 @@ def core_deps_from_source(session, protobuf_implementation):
     # the `prerel_deps` list in the `prerelease_deps` nox session should also be updated.
     core_dependencies_from_source = [
         "googleapis-common-protos @ git+https://github.com/googleapis/google-cloud-python#egg=googleapis-common-protos&subdirectory=packages/googleapis-common-protos",
-        "google-api-core @ git+https://github.com/googleapis/python-api-core.git",
+        "google-api-core @ git+https://github.com/googleapis/google-cloud-python#egg=google-api-core&subdirectory=packages/google-api-core",
         "google-auth @ git+https://github.com/googleapis/google-auth-library-python.git",
         "grpc-google-iam-v1 @ git+https://github.com/googleapis/google-cloud-python#egg=grpc-google-iam-v1&subdirectory=packages/grpc-google-iam-v1",
-        "proto-plus @ git+https://github.com/googleapis/proto-plus-python.git",
+        "proto-plus @ git+https://github.com/googleapis/google-cloud-python#egg=proto-plus&subdirectory=packages/proto-plus",
     ]
 
     for dep in core_dependencies_from_source:
diff --git a/tests/integration/goldens/logging_internal/noxfile.py b/tests/integration/goldens/logging_internal/noxfile.py
index c2efe83be4..ebeacae6b8 100755
--- a/tests/integration/goldens/logging_internal/noxfile.py
+++ b/tests/integration/goldens/logging_internal/noxfile.py
@@ -603,10 +603,10 @@ def core_deps_from_source(session, protobuf_implementation):
     # the `prerel_deps` list in the `prerelease_deps` nox session should also be updated.
     core_dependencies_from_source = [
         "googleapis-common-protos @ git+https://github.com/googleapis/google-cloud-python#egg=googleapis-common-protos&subdirectory=packages/googleapis-common-protos",
-        "google-api-core @ git+https://github.com/googleapis/python-api-core.git",
+        "google-api-core @ git+https://github.com/googleapis/google-cloud-python#egg=google-api-core&subdirectory=packages/google-api-core",
         "google-auth @ git+https://github.com/googleapis/google-auth-library-python.git",
         "grpc-google-iam-v1 @ git+https://github.com/googleapis/google-cloud-python#egg=grpc-google-iam-v1&subdirectory=packages/grpc-google-iam-v1",
-        "proto-plus @ git+https://github.com/googleapis/proto-plus-python.git",
+        "proto-plus @ git+https://github.com/googleapis/google-cloud-python#egg=proto-plus&subdirectory=packages/proto-plus",
     ]
 
     for dep in core_dependencies_from_source:
diff --git a/tests/integration/goldens/redis/noxfile.py b/tests/integration/goldens/redis/noxfile.py
index 0291767b81..df281e656c 100755
--- a/tests/integration/goldens/redis/noxfile.py
+++ b/tests/integration/goldens/redis/noxfile.py
@@ -603,10 +603,10 @@ def core_deps_from_source(session, protobuf_implementation):
     # the `prerel_deps` list in the `prerelease_deps` nox session should also be updated.
     core_dependencies_from_source = [
         "googleapis-common-protos @ git+https://github.com/googleapis/google-cloud-python#egg=googleapis-common-protos&subdirectory=packages/googleapis-common-protos",
-        "google-api-core @ git+https://github.com/googleapis/python-api-core.git",
+        "google-api-core @ git+https://github.com/googleapis/google-cloud-python#egg=google-api-core&subdirectory=packages/google-api-core",
         "google-auth @ git+https://github.com/googleapis/google-auth-library-python.git",
         "grpc-google-iam-v1 @ git+https://github.com/googleapis/google-cloud-python#egg=grpc-google-iam-v1&subdirectory=packages/grpc-google-iam-v1",
-        "proto-plus @ git+https://github.com/googleapis/proto-plus-python.git",
+        "proto-plus @ git+https://github.com/googleapis/google-cloud-python#egg=proto-plus&subdirectory=packages/proto-plus",
     ]
 
     for dep in core_dependencies_from_source:
diff --git a/tests/integration/goldens/redis_selective/noxfile.py b/tests/integration/goldens/redis_selective/noxfile.py
index 0291767b81..df281e656c 100755
--- a/tests/integration/goldens/redis_selective/noxfile.py
+++ b/tests/integration/goldens/redis_selective/noxfile.py
@@ -603,10 +603,10 @@ def core_deps_from_source(session, protobuf_implementation):
     # the `prerel_deps` list in the `prerelease_deps` nox session should also be updated.
     core_dependencies_from_source = [
         "googleapis-common-protos @ git+https://github.com/googleapis/google-cloud-python#egg=googleapis-common-protos&subdirectory=packages/googleapis-common-protos",
-        "google-api-core @ git+https://github.com/googleapis/python-api-core.git",
+        "google-api-core @ git+https://github.com/googleapis/google-cloud-python#egg=google-api-core&subdirectory=packages/google-api-core",
         "google-auth @ git+https://github.com/googleapis/google-auth-library-python.git",
         "grpc-google-iam-v1 @ git+https://github.com/googleapis/google-cloud-python#egg=grpc-google-iam-v1&subdirectory=packages/grpc-google-iam-v1",
-        "proto-plus @ git+https://github.com/googleapis/proto-plus-python.git",
+        "proto-plus @ git+https://github.com/googleapis/google-cloud-python#egg=proto-plus&subdirectory=packages/proto-plus",
     ]
 
     for dep in core_dependencies_from_source: