diff --git a/pyproject.toml b/pyproject.toml
index 74a239c..7723c6c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -13,17 +13,19 @@ build-backend = "poetry.core.masonry.api"
 
 [tool.poetry.dependencies]
 python = "^3.10"
-influxdb-client = "^1.36.1"
-sqlmodel = "^0.0.8"
 confz = "^2.0.0"
-psycopg2-binary = "^2.9.6"
 pydase = "*"
 
 # optional dependencies
-tiqi-rpc = { git = "ssh://git@gitlab.phys.ethz.ch/tiqi-projects/tiqi-rpc-python.git", optional=true }
+tiqi-rpc = { git = "ssh://git@gitlab.phys.ethz.ch/tiqi-projects/tiqi-rpc-python.git", optional = true }
+influxdb-client = { version = "^1.36.1", optional = true}
+sqlmodel = { version = "^0.0.8", optional = true}
+psycopg2-binary = { version = "^2.9.6", optional = true }
 
 [tool.poetry.extras]
 ionizer = ["tiqi-rpc"]
+influxdbv2 = ["influxdb-client"]
+postgresql = ["sqlmodel", "psycopg2-binary"]
 
 [tool.poetry.group.dev]
 optional = true