diff --git a/pyproject.toml b/pyproject.toml
index 706af0c..8f4389e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -19,7 +19,7 @@ classifiers = [
 readme = { file = "./README.md", content-type = "text/markdown" }
 dependencies = [
     "geojson-pydantic ~= 1.0",
-    "pyproj ~= 3.6.0",
+    "pyproj >= 3.6,< 3.8",
     "rich-argparse ~= 1.3",
     "shapely ~= 2.0.2",
 ]
@@ -32,14 +32,14 @@ repository = "https://github.com/GeodetischeInfrastructuur/geodense"
 [project.optional-dependencies]
 dev = [
     "black == 24.8.0",
-    "build == 1.2.1",
+    "build == 1.2.2",
     "cli-test-helpers == 4.0.0",
     "coverage == 7.6.1",
     "mypy == 1.11.2",
     "mypy-extensions == 1.0.0",
-    "pytest == 8.3.2",
-    "pytest-env == 1.1.3",
-    "ruff == 0.6.4",
+    "pytest == 8.3.3",
+    "pytest-env == 1.1.5",
+    "ruff == 0.6.9",
     "twine == 5.1.1",
 ]