diff --git a/doc/installation.rst b/doc/installation.rst
index f695837..9660475 100644
--- a/doc/installation.rst
+++ b/doc/installation.rst
@@ -15,9 +15,9 @@ Install with additional DBAPIs packages
 
 .. code-block:: bash
 
-    pip install pgmq-sqlalchemy[psycopg2]
-    pip install pgmq-sqlalchemy[asyncpg]
-    # pip install pgmq-sqlalchemy[postgres-python-driver]
+    pip install "pgmq-sqlalchemy[asyncpg]"
+    pip install "pgmq-sqlalchemy[psycopg2-binary]"
+    # pip install "pgmq-sqlalchemy[postgres-python-driver]"
 
 .. Note:: See `SQLAlchemy Postgresql Dialects <https://docs.sqlalchemy.org/en/20/dialects/postgresql.html>`_ for all available DBAPIs packages.
 
diff --git a/pyproject.toml b/pyproject.toml
index abb51b4..db966f4 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -27,7 +27,7 @@ classifiers = [
 "Documentation" = "https://pgmq-sqlalchemy.readthedocs.io/en/latest/"
 
 [tool.poetry.extras]
-asyncpg = ["asyncpg"]
+asyncpg = ["asyncpg", "greenlet"]
 pg8000 = ["pg8000"]
 psycopg = ["psycopg"]
 psycopg2-binary = ["psycopg2-binary"]
@@ -37,6 +37,13 @@ psycopg2cffi = ["psycopg2cffi"]
 [tool.poetry.dependencies]
 python = "^3.9"
 SQLAlchemy = "^2.0.31"
+# optional dependencies
+asyncpg = {version = "^0.29.0", optional = true}
+greenlet = {version = "^3.0.3", optional = true}
+pg8000 = {version = "^1.31.2", optional = true}
+psycopg = {version = "^3.2.1", optional = true}
+psycopg2-binary = {version = "^2.9.9", optional = true}
+psycopg2cffi = {version = "^2.9.0", optional = true}
 
 [tool.poetry.group.dev.dependencies]
 # postgresql drivers