diff --git a/ci.nix b/ci.nix
index 47d2236e28b7b242bb1f9cd6aaebcbe2a1ac95f0..1377d43c00b1506533358c9e0fc17901b6c8e12a 100644
--- a/ci.nix
+++ b/ci.nix
@@ -17,7 +17,7 @@ let
 
   isReserved = n: n == "lib" || n == "overlays" || n == "modules";
   isDerivation = p: isAttrs p && p ? type && p.type == "derivation";
-  isBuildable = p: !(p.meta.broken or false) && p.meta.license.free or true;
+  isBuildable = p: !(p.meta.broken or false) && p.meta.license.free or false;
   isCacheable = p: !(p.preferLocalBuild or false);
   shouldRecurseForDerivations = p: isAttrs p && p.recurseForDerivations or false;