diff --git a/pkgs/applications/networking/cluster/kuma/default.nix b/pkgs/applications/networking/cluster/kuma/default.nix
index 20bba7d405dcf..3abdda36013fe 100644
--- a/pkgs/applications/networking/cluster/kuma/default.nix
+++ b/pkgs/applications/networking/cluster/kuma/default.nix
@@ -61,5 +61,6 @@ buildGoModule rec {
     homepage = "https://kuma.io/";
     license = licenses.asl20;
     maintainers = with maintainers; [ zbioe ];
+    broken = true; # vendor isn't reproducible with go > 1.20: nix-build -A kuma-cp.go-modules --check
   };
 }
diff --git a/pkgs/development/compilers/tinygo/default.nix b/pkgs/development/compilers/tinygo/default.nix
index 0d2541a5a1ab7..dcd2205f0f8b1 100644
--- a/pkgs/development/compilers/tinygo/default.nix
+++ b/pkgs/development/compilers/tinygo/default.nix
@@ -161,5 +161,8 @@ buildGoModule rec {
     description = "Go compiler for small places";
     license = licenses.bsd3;
     maintainers = with maintainers; [ Madouura muscaln ];
+    # vendor can't be recreated and fails with:
+    #   error: illegal path references in fixed-output derivation '/nix/store/......-tinygo-0.26.0-go-modules.drv'
+    broken = true;
   };
 }
diff --git a/pkgs/development/tools/misc/k2tf/default.nix b/pkgs/development/tools/misc/k2tf/default.nix
index e240834f2b4fb..1a040a0bfee8e 100644
--- a/pkgs/development/tools/misc/k2tf/default.nix
+++ b/pkgs/development/tools/misc/k2tf/default.nix
@@ -20,5 +20,6 @@ buildGoModule rec {
     homepage = "https://github.com/sl1pm4t/k2tf";
     license = licenses.mpl20;
     maintainers = [ maintainers.flokli ];
+    broken = true; # vendor isn't reproducible with go > 1.20: nix-build -A k2tf.go-modules --check
   };
 }