diff --git a/flake.lock b/flake.lock
index 1304e6396d287fdf577b97925b26d878cd5f2b02..722a7ec905dc3e4d9d58f515ca459283a3e88231 100644
--- a/flake.lock
+++ b/flake.lock
@@ -144,11 +144,11 @@
         "pre-commit-hooks": "pre-commit-hooks"
       },
       "locked": {
-        "lastModified": 1692187439,
-        "narHash": "sha256-m7c4EPFWmB1OmV3dSYQk2qtXR53xOjZdLCjMtzHSK34=",
+        "lastModified": 1696872058,
+        "narHash": "sha256-QCfoTnGtUABi5KbWXrTh4fhvLGP5B0gAG6KU1ACd96s=",
         "ref": "main",
-        "rev": "408f3deab2e2f6ae60349776dde02c44f71fb386",
-        "revCount": 16,
+        "rev": "683abab784ee38ea61863b3594d3777345f420d6",
+        "revCount": 20,
         "type": "git",
         "url": "https://whetstone.private.storage/jcalderone/hs-flake-utils.git"
       },
diff --git a/tahoe-great-black-swamp.cabal b/tahoe-great-black-swamp.cabal
index b8524132d4b49f67619d9fb61118c0bc9b59b3d7..39800ad83e058008c5bb16449c6bbdc35f88465d 100644
--- a/tahoe-great-black-swamp.cabal
+++ b/tahoe-great-black-swamp.cabal
@@ -218,7 +218,7 @@ test-suite http-tests
     , cborg                    >=0.2.4    && <0.3
     , connection               >=0.3      && <0.4
     , data-default-class       >=0.1      && <0.2
-    , data-interval
+    , data-interval            >=2.0.1    && <2.2
     , hspec                    <2.12
     , hspec-expectations       <0.9
     , hspec-wai                <0.12