diff --git a/var/spack/repos/builtin/packages/py-httpx/package.py b/var/spack/repos/builtin/packages/py-httpx/package.py
index 37be8063c45..1d999f6b4e7 100644
--- a/var/spack/repos/builtin/packages/py-httpx/package.py
+++ b/var/spack/repos/builtin/packages/py-httpx/package.py
@@ -15,6 +15,8 @@ class PyHttpx(PythonPackage):
 
     license("BSD-3-Clause")
 
+    version("0.28.1", sha256="75e98c5f16b0f35b567856f597f06ff2270a374470a5c2392242528e3e3e42fc")
+    version("0.28.0", sha256="0858d3bab51ba7e386637f22a61d8ccddaeec5f3fe4209da3a6168dbb91573e0")
     version("0.27.2", sha256="f7c2be1d2f3c3c3160d441802406b206c2b76f5947b11115e6df10c6c65e66c2")
     version("0.27.0", sha256="a0cb88a46f32dc874e04ee956e4c2764aba2aa228f650b06788ba6bda2962ab5")
     version("0.23.3", sha256="9818458eb565bb54898ccb9b8b251a28785dd4a55afbc23d0eb410754fe7d0f9")
@@ -40,14 +42,13 @@ class PyHttpx(PythonPackage):
         depends_on("py-anyio", when="@0.27:")
         depends_on("py-idna", when="@0.27:")
 
-        depends_on("py-sniffio@1", when="@0.11.1")
-        depends_on("py-sniffio", when="@0.15.2:")
-
         depends_on("py-h2@3", when="@0.11.1")
         depends_on("py-h2@3", when="@0.15.2+http2")
         depends_on("py-h2@3:4", when="@0.22.0:+http2")
 
         # Historical dependencies
+        depends_on("py-sniffio", when="@0.15.2:0.27")
+        depends_on("py-sniffio@1", when="@0.11.1")
         depends_on("py-hstspreload", when="@0.11.1")
         depends_on("py-chardet@3", when="@0.11.1")
         depends_on("py-h11@0.8:0.9", when="@0.11.1")