diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index c437b4abd..a6fe990f0 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -6,7 +6,7 @@ on:
     - 'release/*'
   pull_request:
 env:
-  CORE_REPO_SHA: 09b010cfcc85e2aa07326e9204541b80a7dd52f0
+  CORE_REPO_SHA: 48efb9737b037b7fb85ecafdf0f3dccd45d96af8
 
 jobs:
   build:
diff --git a/tests/opentelemetry-docker-tests/tests/postgres/test_aiopg_functional.py b/tests/opentelemetry-docker-tests/tests/postgres/test_aiopg_functional.py
index 423151316..53f49c313 100644
--- a/tests/opentelemetry-docker-tests/tests/postgres/test_aiopg_functional.py
+++ b/tests/opentelemetry-docker-tests/tests/postgres/test_aiopg_functional.py
@@ -22,7 +22,7 @@ from opentelemetry import trace as trace_api
 from opentelemetry.instrumentation.aiopg import AiopgInstrumentor
 from opentelemetry.test.test_base import TestBase
 
-POSTGRES_HOST = os.getenv("POSTGRESQL_HOST", "localhost")
+POSTGRES_HOST = os.getenv("POSTGRESQL_HOST", "127.0.0.1")
 POSTGRES_PORT = int(os.getenv("POSTGRESQL_PORT", "5432"))
 POSTGRES_DB_NAME = os.getenv("POSTGRESQL_DB_NAME", "opentelemetry-tests")
 POSTGRES_PASSWORD = os.getenv("POSTGRESQL_PASSWORD", "testpassword")