diff --git a/.gitignore b/.gitignore
index 21c9d6e..e013556 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,3 +6,4 @@ __pycache__
 .pre-commit-config.yaml
 .vscode
 .coverage
+.hypothesis
diff --git a/README.md b/README.md
index fe24133..02bda04 100644
--- a/README.md
+++ b/README.md
@@ -27,6 +27,5 @@ total | 1
 ## todo
 
 - [x] roll with (dis)advantage
-- [ ] interactive rolling mode
 - [x] print criticals
-- [ ] use property testing
+- [x] use property testing
diff --git a/justfile b/justfile
index 2be7b3f..b11262f 100644
--- a/justfile
+++ b/justfile
@@ -23,8 +23,8 @@ env:
 
 clean:
     hatch clean
-    hatch env purge
-    rm -r .{mypy,pytest,ruff}_cache
-    rm -r dist
-    rm .coverage
+    hatch env prune
+    -rm -r .{mypy,pytest,ruff}_cache
+    -rm -r dist
+    -rm .coverage
     fd __pycache__ --no-ignore --exec rm -r
diff --git a/pyproject.toml b/pyproject.toml
index 4459bd6..7a29e20 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -38,6 +38,7 @@ path = "roll/__about__.py"
 [tool.hatch.envs.default]
 dependencies = [
   "coverage[toml]>=6.5",
+  "hypothesis",
   "pytest",
 ]
 [tool.hatch.envs.default.scripts]