diff --git a/pkgs/applications/version-management/git-and-tools/git/default.nix b/pkgs/applications/version-management/git-and-tools/git/default.nix
index 9ed530f9a23..3431a7e52fd 100644
--- a/pkgs/applications/version-management/git-and-tools/git/default.nix
+++ b/pkgs/applications/version-management/git-and-tools/git/default.nix
@@ -311,6 +311,9 @@ stdenv.mkDerivation {
     # Tested to fail: 2.18.0
     disable_test t9902-completion "sourcing the completion script clears cached --options"
 
+    # Flaky tests:
+    disable_test t5319-multi-pack-index
+
     ${lib.optionalString (!perlSupport) ''
       # request-pull is a Bash script that invokes Perl, so it is not available
       # when NO_PERL=1, and the test should be skipped, but the test suite does