diff --git a/pyproject.toml b/pyproject.toml
index 8d3bbf6..8d2665a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -43,7 +43,7 @@ dynamic = [
   "version",
 ]
 dependencies = [
-  "httpx<0.28",   # this is pinned temporarily, until respx is able to mock 0.28+ properly
+  "httpx>=0.27",
   "xsdata>=24.5",
 ]
 optional-dependencies.cli = [
@@ -72,7 +72,7 @@ optional-dependencies.test = [
   "pytest-randomly~=3.15",
   "pytest-recording~=0.13",
   "pytest-xdist~=3.6",
-  "respx~=0.21",
+  "respx~=0.22",
 ]
 urls.Changelog = "https://github.com/afuetterer/python-re3data/blob/main/CHANGELOG.md"
 urls.Documentation = "https://afuetterer.github.io/python-re3data"