diff --git a/stack.yaml b/stack.yaml
index b4f54f632e9..ff487795518 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -13,24 +13,30 @@ packages:
 - hledger-ui
 - hledger-web
 
+# To minimise problems, use the versions shipped with GHC 9.10.1 when possible.
+# See https://github.com/haskell/unix/issues/329.
 extra-deps:
 - base-compat-0.14.0
+
 # for hledger-lib
 - Cabal-3.12.0.0
 - Cabal-syntax-3.12.0.0
+#- directory-1.3.8.3
+#- filepath-1.5.2.0
 - directory-1.3.9.0
 - filepath-1.4.301.0
 - ghc-boot-9.10.1@rev:1
-- process-1.6.25.0
+- process-1.6.19.0
 - time-1.12.2
 - unix-2.8.5.1
-#- unix-2.8.6.0  # https://github.com/haskell/unix/issues/329
 # for windows
 - Win32-2.14.0.0
+
 # for hledger
 - haskeline-0.8.2.1
 # to silence a warning
 - wizards-1.0.3@rev:3
+
 # for dev builds when the debug flag is enabled:
 # - ghc-debug-convention-0.6.0.0
 # - ghc-debug-stub-0.6.0.0