diff --git a/pyproject.toml b/pyproject.toml
index e919c57..344f430 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -30,6 +30,16 @@ termcolor = "<1.2"
 #biosimulators-utils = {git = "https://github.com/biosimulators/Biosimulators_utils.git", rev = "dev", extras = ["bngl", "cellml", "lems", "neuroml", "sbml", "simularium", "escher", "containers", "logging", "rba", "smoldyn"]}
 biosimulators-utils = {version = ">=0.2", extras = ["bngl", "cellml", "lems", "neuroml", "sbml", "simularium", "escher", "containers", "logging", "smoldyn"]} # add back "rba" after it is fixed
 
+[tool.poetry.group.dev.dependencies]
+capturer = "^3.0"
+docker = "^7.1.0"
+bezier = "*"
+flake8 = "^7.1.1"
+pytest = "^8.3.2"
+pytest-cov = "^5.0.0"
+flaky = "^3.8.1"
+jsonschema = "^4.23.0"
+
 [tool.poetry.group.docs.dependencies]
 pydata-sphinx-theme = "*"  # for building documentation
 sphinx = ">=1.8"
@@ -37,8 +47,9 @@ sphinxprettysearchresults = { git = "https://github.com/biosimulators/sphinx-pre
 
 [tool.poetry.group.test.dependencies]
 setuptools = "^75.1.0"
-pytest = "*"
-flake8 = "*"
+pytest = "^8.3.2"
+pytest-cov = "^5.0.0"
+flake8 = "^7.1.1"
 parameterized = "*"
 biosimulators_simularium = "*"