diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,8 +1,12 @@
 # Revision history for gargoyle-postgresql-nix
 
+## 0.3.0.3
+
+* Add `libpq` to `pkgconfig-depends`
+
 ## 0.3.0.2
 
-* Support GHC 9.12
+* Support GHC 9.10
 
 ## 0.3.0.1
 
diff --git a/gargoyle-postgresql-nix.cabal b/gargoyle-postgresql-nix.cabal
--- a/gargoyle-postgresql-nix.cabal
+++ b/gargoyle-postgresql-nix.cabal
@@ -1,5 +1,5 @@
 name:               gargoyle-postgresql-nix
-version:            0.3.0.2
+version:            0.3.0.3
 author:             Obsidian Systems LLC
 maintainer:         maintainer@obsidian.systems
 copyright:          Copyright (C) 2017 Obsidian Systems LLC
@@ -29,7 +29,8 @@
     , gargoyle             >=0.1  && <0.2
     , gargoyle-postgresql  >=0.2  && <0.3
     , which                >=0.2  && <0.3
-
+  pkgconfig-depends:
+    libpq
   hs-source-dirs:   src
   default-language: Haskell2010