diff --git a/tox.ini b/tox.ini
index 68d69bfb..a63e6c2e 100644
--- a/tox.ini
+++ b/tox.ini
@@ -2,7 +2,7 @@
 envlist =
     py{39,310,311,312,313}-test{,-all}{,-dev,-latest,-oldest}{,-cov}
     py{39,310,311,312,313}-test-numpy{121,122,123,124,125,126,20,21,22,23,24}
-    py{39,310,311,312,313}-test-scipy{16,17,18,19,110,111,112,113,114,115,116,117}
+    py{39,310,311,312,313}-test-scipy{18,19,110,111,112,113,114,115,116,117}
     py{39,310,311,312,313}-test-astropy{43,50,51,52,53,60,61,70,71,72}
     build_docs
     linkcheck
@@ -47,8 +47,6 @@ description =
     numpy22: with numpy 2.2.*
     numpy23: with numpy 2.3.*
     numpy24: with numpy 2.4.*
-    scipy16: with scipy 1.6.*
-    scipy17: with scipy 1.7.*
     scipy18: with scipy 1.8.*
     scipy19: with scipy 1.9.*
     scipy110: with scipy 1.10.*
@@ -85,8 +83,6 @@ deps =
     numpy23: numpy==2.3.*
     numpy24: numpy==2.4.*
 
-    scipy16: scipy==1.6.*
-    scipy17: scipy==1.7.*
     scipy18: scipy==1.8.*
     scipy19: scipy==1.9.*
     scipy110: scipy==1.10.*
@@ -119,7 +115,7 @@ deps =
 
     oldest: astropy==4.3.*
     oldest: numpy==1.21.*
-    oldest: scipy==1.6.*
+    oldest: scipy==1.8.*
 
 # The following indicates which extras_require from setup.cfg will be installed
 extras =