diff --git a/pkgs/sagemath-categories/tox.ini b/pkgs/sagemath-categories/tox.ini
index 6f798bbd00d..bc5213f1730 100644
--- a/pkgs/sagemath-categories/tox.ini
+++ b/pkgs/sagemath-categories/tox.ini
@@ -13,7 +13,7 @@ envlist =
 requires =
     # Auto-provision a modern tox.
     # [pkgenv] added in 4.2 - https://tox.wiki/en/latest/upgrading.html#packaging-configuration-and-inheritance
-    tox>=4.8
+    tox>=4.2
 
 [pkgenv]
 # Environment in which to build the sdist.
@@ -65,7 +65,7 @@ commands =
 [testenv:.tox]
 # Allow access to PyPI for auto-provisioning a suitable tox version
 passenv =
-setenv =
+setenv =                     PIP_NO_INDEX=false
 
 [testenv:.pkg-sagepython]
 # Environment in which to build the sdist.
diff --git a/pkgs/sagemath-environment/tox.ini b/pkgs/sagemath-environment/tox.ini
index 4ae9cabf595..65bcdc902e0 100644
--- a/pkgs/sagemath-environment/tox.ini
+++ b/pkgs/sagemath-environment/tox.ini
@@ -59,7 +59,7 @@ commands =
 [testenv:.tox]
 # Allow access to PyPI for auto-provisioning a suitable tox version
 passenv =
-setenv =
+setenv =                     PIP_NO_INDEX=false
 
 [testenv:.pkg-sagepython]
 # Environment in which to build the sdist.
diff --git a/pkgs/sagemath-objects/tox.ini b/pkgs/sagemath-objects/tox.ini
index 5221c8613c8..e5bf1e6dac7 100644
--- a/pkgs/sagemath-objects/tox.ini
+++ b/pkgs/sagemath-objects/tox.ini
@@ -63,7 +63,7 @@ commands =
 [testenv:.tox]
 # Allow access to PyPI for auto-provisioning a suitable tox version
 passenv =
-setenv =
+setenv =                     PIP_NO_INDEX=false
 
 [testenv:.pkg-sagepython]
 # Environment in which to build the sdist.
diff --git a/pkgs/sagemath-repl/tox.ini b/pkgs/sagemath-repl/tox.ini
index bdc705c9504..1637788be39 100644
--- a/pkgs/sagemath-repl/tox.ini
+++ b/pkgs/sagemath-repl/tox.ini
@@ -61,7 +61,7 @@ commands =
 [testenv:.tox]
 # Allow access to PyPI for auto-provisioning a suitable tox version
 passenv =
-setenv =
+setenv =                     PIP_NO_INDEX=false
 
 [testenv:.pkg-sagepython]
 # Environment in which to build the sdist.
diff --git a/pkgs/sagemath-standard/tox.ini b/pkgs/sagemath-standard/tox.ini
index b305894d324..f63b107e2ed 100644
--- a/pkgs/sagemath-standard/tox.ini
+++ b/pkgs/sagemath-standard/tox.ini
@@ -133,7 +133,7 @@ commands =
 [testenv:.tox]
 # Allow access to PyPI for auto-provisioning a suitable tox version
 passenv =
-setenv =
+setenv =                     PIP_NO_INDEX=false
 
 [testenv:.pkg-sagepython]
 # Environment in which to build the sdist.