diff --git a/pyproject.toml b/pyproject.toml
index 12bc8af0..ef2bf4e6 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -53,7 +53,7 @@ dependencies = [
 rdt = { main = 'rdt.cli.__main__:main' }
 
 [project.optional-dependencies]
-copulas = ['copulas@git+https://git@github.com/sdv-dev/copulas.git',]
+copulas = ['copulas==0.12.1.dev0',]
 pyarrow = ['pyarrow>=17.0.0']
 test = [
     'rdt[pyarrow]',