diff --git a/poetry.lock b/poetry.lock
index d89d409..76217e6 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1060,6 +1060,24 @@ files = [
     {file = "pyyaml-6.0.2.tar.gz", hash = "sha256:d584d9ec91ad65861cc08d42e834324ef890a082e591037abe114850ff7bbc3e"},
 ]
 
+[[package]]
+name = "quantities"
+version = "0.16.0"
+description = "Support for physical quantities with units, based on numpy"
+optional = false
+python-versions = ">=3.8"
+files = [
+    {file = "quantities-0.16.0-py3-none-any.whl", hash = "sha256:189e573953e7864d8c303a3472f6ad39fbe0698c3d75c17059b70bc457c7c66d"},
+    {file = "quantities-0.16.0.tar.gz", hash = "sha256:211cce2d268da7e202abab5c2533ce3200ff619dd8ac2a3cd98f861b8a57c6eb"},
+]
+
+[package.dependencies]
+numpy = ">=1.20"
+
+[package.extras]
+doc = ["sphinx"]
+test = ["pytest", "wheel"]
+
 [[package]]
 name = "rich"
 version = "13.9.2"
@@ -1248,4 +1266,4 @@ files = [
 [metadata]
 lock-version = "2.0"
 python-versions = ">=3.11, <3.13"
-content-hash = "f10a3cf403151d2c96c5c45a546860eaa3883d47cdc8d719a3e49ad0d4bb95d4"
+content-hash = "31433ed1dc0cc83dd7e781546dad5b8f068d59eaf692b4d3c12e07c604b1a6dd"
diff --git a/pyproject.toml b/pyproject.toml
index 01ae05f..592eacd 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -35,6 +35,7 @@ pytest = "^8.3.3"
 pglive = "^0.7.6"
 pyyaml = "^6.0.2"
 dacite = "^1.8.1"
+quantities = "^0.16.0"
 
 [tool.poetry.scripts]
 pyrelacs = "pyrelacs.app:main"