diff --git a/.github/workflows/build-and-cache-libpq.yml b/.github/workflows/build-and-cache-libpq.yml
index 335fcc80f..6e5c43a5e 100644
--- a/.github/workflows/build-and-cache-libpq.yml
+++ b/.github/workflows/build-and-cache-libpq.yml
@@ -42,7 +42,7 @@ on:
 # across workflows.
 
 env:
-  LIBPQ_VERSION: "17.6"
+  LIBPQ_VERSION: "17.9"
   OPENSSL_VERSION: "3.5.4"
   PQ_FLAGS: ""
 
diff --git a/.github/workflows/packages.yml b/.github/workflows/packages.yml
index 2e291c876..6e3379322 100644
--- a/.github/workflows/packages.yml
+++ b/.github/workflows/packages.yml
@@ -13,7 +13,7 @@ on:
 
 env:
   PIP_BREAK_SYSTEM_PACKAGES: "1"
-  LIBPQ_VERSION: "17.6"
+  LIBPQ_VERSION: "17.9"
   OPENSSL_VERSION: "3.5.4"
   PQ_FLAGS: ""