diff --git a/tests/run.sh b/tests/run.sh
index 784d29183..194e767dd 100644
--- a/tests/run.sh
+++ b/tests/run.sh
@@ -18,10 +18,10 @@ if [[ $(uname) = Linux ]]; then
     # Note: we need the sandbox paths to ensure that the shell is
     # visible in the sandbox.
     nix run --sandbox-build-dir /build-tmp \
-        --sandbox-paths '/nix? /bin? /lib? /usr?' \
+        --sandbox-paths '/nix? /bin? /lib? /lib64? /usr?' \
         --store $TEST_ROOT/store0 -f run.nix hello -c hello | grep 'Hello World'
 
-    path2=$(nix run --sandbox-paths '/nix? /bin? /lib? /usr?' --store $TEST_ROOT/store0 -f run.nix hello -c $SHELL -c 'type -p hello')
+    path2=$(nix run --sandbox-paths '/nix? /bin? /lib? /lib64? /usr?' --store $TEST_ROOT/store0 -f run.nix hello -c $SHELL -c 'type -p hello')
 
     [[ $path/bin/hello = $path2 ]]