diff --git a/Formula/cohomcalg.rb b/Formula/cohomcalg.rb
index 5d39e59..6e83187 100644
--- a/Formula/cohomcalg.rb
+++ b/Formula/cohomcalg.rb
@@ -1,7 +1,7 @@
 class Cohomcalg < Formula
   desc "Computation of sheaf cohomologies for line bundles on toric varieties"
   homepage "https://github.com/BenjaminJurke/cohomCalg"
-  url "https://github.com/BenjaminJurke/cohomCalg/archive/v0.32.tar.gz"
+  url "https://github.com/BenjaminJurke/cohomCalg/archive/refs/tags/v0.32.tar.gz"
   sha256 "367c52b99c0b0a4794b215181439bf54abe4998872d3ef25d793bc13c4d40e42"
   license "GPL-3.0-only"
   revision 1
diff --git a/Formula/csdp.rb b/Formula/csdp.rb
index b365f2f..a0051bf 100644
--- a/Formula/csdp.rb
+++ b/Formula/csdp.rb
@@ -1,7 +1,7 @@
 class Csdp < Formula
   desc "Semidefinite programming problems"
   homepage "https://github.com/coin-or/Csdp"
-  url "https://github.com/coin-or/Csdp/archive/releases/6.2.0.tar.gz"
+  url "https://github.com/coin-or/Csdp/archive/refs/tags/releases/6.2.0.tar.gz"
   sha256 "3d341974af1f8ed70e1a37cc896e7ae4a513375875e5b46db8e8f38b7680b32f"
   license "EPL-2.0"
   revision 10
diff --git a/Formula/lrs.rb b/Formula/lrs.rb
index 75478dd..2b7b02b 100644
--- a/Formula/lrs.rb
+++ b/Formula/lrs.rb
@@ -2,7 +2,7 @@ class Lrs < Formula
   desc "Vertex enumeration/convex hull problems"
   homepage "https://github.com/mkoeppe/lrslib" # http://cgm.cs.mcgill.ca/~avis/C/lrs.html
   # update
-  url "https://github.com/mkoeppe/lrslib/archive/lrslib-070.tar.gz"
+  url "https://github.com/mkoeppe/lrslib/archive/refs/tags/lrslib-070.tar.gz"
   sha256 "0a8e4d9afe0b608333e256a9e4588eb7080ebb0966ae3dcb7df708ba2bde6f90"
   license "GPL-2.0-only"
   revision 1