diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 17d90c135678..25f97b0d24ac 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -428,7 +428,9 @@ with pkgs;
 
   cryptowatch-desktop = callPackage ../applications/finance/cryptowatch { };
 
-  datalad = callPackage ../applications/version-management/datalad { };
+  datalad = callPackage ../applications/version-management/datalad {
+    python3 = python39;  # `boto` currently broken with Python3.10
+  };
 
   dhallDirectoryToNix = callPackage ../build-support/dhall/directory-to-nix.nix { };