diff --git a/var/spack/repos/builtin/packages/py-pyrsistent/package.py b/var/spack/repos/builtin/packages/py-pyrsistent/package.py
index fc85e14944b..f305f5f5dab 100644
--- a/var/spack/repos/builtin/packages/py-pyrsistent/package.py
+++ b/var/spack/repos/builtin/packages/py-pyrsistent/package.py
@@ -21,6 +21,7 @@ class PyPyrsistent(PythonPackage):
     version("0.18.0", sha256="773c781216f8c2900b42a7b638d5b517bb134ae1acbebe4d1e8f1f41ea60eb4b")
     version("0.16.0", sha256="28669905fe725965daa16184933676547c5bb40a5153055a8dee2a4bd7933ad3")
     version("0.15.7", sha256="cdc7b5e3ed77bed61270a47d35434a30617b9becdf2478af76ad2c6ade307280")
+    version("0.14.0", sha256="297714c609506494650eea704d70cbe1b156259a578a98b97864ab9a8cbad39f")
 
     depends_on("c", type="build")  # generated
 
@@ -28,3 +29,5 @@ class PyPyrsistent(PythonPackage):
     depends_on("py-setuptools@42:", when="@0.18.0:", type="build")
     depends_on("py-setuptools", type="build")
     depends_on("py-six", when="@:0.17", type=("build", "run"))
+
+    conflicts("python@3.10:", when="@0.14")