diff --git a/dev-haskell/hdbc-postgresql/hdbc-postgresql-2.5.0.0.ebuild b/dev-haskell/hdbc-postgresql/hdbc-postgresql-2.5.0.0.ebuild
index ad99cae6ccbd4..8004d0b918dcb 100644
--- a/dev-haskell/hdbc-postgresql/hdbc-postgresql-2.5.0.0.ebuild
+++ b/dev-haskell/hdbc-postgresql/hdbc-postgresql-2.5.0.0.ebuild
@@ -17,7 +17,7 @@ HOMEPAGE="https://github.com/hdbc/hdbc-postgresql"
 SRC_URI="https://hackage.haskell.org/package/${MY_P}/${MY_P}.tar.gz"
 
 LICENSE="BSD"
-SLOT="2/${PV}"
+SLOT="0/${PV}"
 KEYWORDS="amd64 ~arm64 ~ppc64 ~riscv ~x86"
 IUSE=""
 
diff --git a/dev-haskell/hdbc-postgresql/hdbc-postgresql-2.5.0.1.ebuild b/dev-haskell/hdbc-postgresql/hdbc-postgresql-2.5.0.1.ebuild
index b90c4758ef833..53a270aa6ab81 100644
--- a/dev-haskell/hdbc-postgresql/hdbc-postgresql-2.5.0.1.ebuild
+++ b/dev-haskell/hdbc-postgresql/hdbc-postgresql-2.5.0.1.ebuild
@@ -19,11 +19,7 @@ HOMEPAGE="https://github.com/hdbc/hdbc-postgresql"
 
 LICENSE="BSD"
 
-# For some reason, the slot was previously set to 2. Changing this could cause
-# problems as haskell-updater tries to reinstall a version of the same slot.
-# This should be changed at some point, but currently the version in ::gentoo
-# is also set to 2.
-SLOT="2/${PV}"
+SLOT="0/${PV}"
 KEYWORDS="~amd64 ~arm64 ~ppc64 ~riscv ~x86"
 
 RDEPEND="
diff --git a/profiles/updates/4Q-2023 b/profiles/updates/4Q-2023
index be53971812405..a4fe88bb542e5 100644
--- a/profiles/updates/4Q-2023
+++ b/profiles/updates/4Q-2023
@@ -24,3 +24,4 @@ move kde-apps/print-manager kde-plasma/print-manager
 move dev-libs/kuserfeedback kde-frameworks/kuserfeedback
 move dev-python/pure_eval dev-python/pure-eval
 slotmove dev-haskell/extra 2 0
+slotmove dev-haskell/hdbc-postgresql 2 0