diff --git a/pkgs/by-name/ca/cargo-llvm-cov/package.nix b/pkgs/by-name/ca/cargo-llvm-cov/package.nix
index 6c4f39d2aa91..18b8a9b3a699 100644
--- a/pkgs/by-name/ca/cargo-llvm-cov/package.nix
+++ b/pkgs/by-name/ca/cargo-llvm-cov/package.nix
@@ -57,10 +57,12 @@ rustPlatform.buildRustPackage (finalAttrs: {
     };
   };
 
-  # `cargo-llvm-cov` reads these environment variables to find these binaries,
-  # which are needed to run the tests
-  LLVM_COV = "${llvm}/bin/llvm-cov";
-  LLVM_PROFDATA = "${llvm}/bin/llvm-profdata";
+  env = {
+    # `cargo-llvm-cov` reads these environment variables to find these binaries,
+    # which are needed to run the tests
+    LLVM_COV = "${llvm}/bin/llvm-cov";
+    LLVM_PROFDATA = "${llvm}/bin/llvm-profdata";
+  };
 
   nativeCheckInputs = [
     gitMinimal