diff --git a/flake.lock b/flake.lock
index 3a0c359be..42ffa3cf1 100644
--- a/flake.lock
+++ b/flake.lock
@@ -316,11 +316,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1765248027,
-        "narHash": "sha256-ngar+yP06x3+2k2Iey29uU0DWx5ur06h3iPBQXlU+yI=",
+        "lastModified": 1787834454,
+        "narHash": "sha256-jXSvqn04IOecJCvSvl8+g3PsbDVNP6qKs6dKUs/b16k=",
         "owner": "oxalica",
         "repo": "rust-overlay",
-        "rev": "7b50ad68415ae5be7ee4cc68fa570c420741b644",
+        "rev": "dc2fd1acc537f3583744e1373597a5731ff7a6e3",
         "type": "github"
       },
       "original": {
diff --git a/nix/cargo-pgrx/default.nix b/nix/cargo-pgrx/default.nix
index ff9b916eb..5972e2b98 100644
--- a/nix/cargo-pgrx/default.nix
+++ b/nix/cargo-pgrx/default.nix
@@ -45,6 +45,11 @@ let
       checkFlags = [
         # requires pgrx to be properly initialized with cargo pgrx init
         "--skip=command::schema::tests::test_parse_managed_postmasters"
+        "--skip=object_utils::tests::parses_managed_postmasters"
+        # require test fixtures not included in the crates.io source tarball
+        "--skip=command::upgrade::tests::find_package_manifest_in_workspace"
+        "--skip=command::upgrade::tests::process_workspace_manifest"
+        "--skip=command::upgrade::tests::process_workspace_package_manifest"
       ];
       meta = with lib; {
         description = "Build Postgres Extensions with Rust";
@@ -81,5 +86,10 @@ in
     hash = "sha256-3TsNpEqNm3Uol5XPW1i0XEbP2fF2+RKB2d7lO6BDnvQ=";
     cargoHash = "sha256-LZUXhjMxkBs3O5feH4X5NQC7Qk4Ja6M5+sAYaSCikrY=";
   };
+  cargo-pgrx_0_19_2 = mkCargoPgrx {
+    version = "0.19.2";
+    hash = "sha256-PANc819AhIE9yJ6NFHGJxHJHWZyR2Srmj2cEz3vQmJk=";
+    cargoHash = "sha256-cTD7x36FvFUIwVLuAqrOJ75vLDppITiDrY8Fs3RjPqU=";
+  };
   inherit mkCargoPgrx;
 }
diff --git a/nix/cargo-pgrx/versions.json b/nix/cargo-pgrx/versions.json
index 7f28c940b..47da9e7df 100644
--- a/nix/cargo-pgrx/versions.json
+++ b/nix/cargo-pgrx/versions.json
@@ -115,5 +115,13 @@
         "cargoHash": "sha256-95DHq5GLnAqb3bbKwwaeBeKEmkfRh81ZTRaJ7L59DAg="
       }
     }
+  },
+  "0.19.2": {
+    "hash": "sha256-PANc819AhIE9yJ6NFHGJxHJHWZyR2Srmj2cEz3vQmJk=",
+    "rust": {
+      "1.97.1": {
+        "cargoHash": "sha256-cTD7x36FvFUIwVLuAqrOJ75vLDppITiDrY8Fs3RjPqU="
+      }
+    }
   }
 }
diff --git a/nix/ext/versions.json b/nix/ext/versions.json
index 78a51b5f6..8bac5a7ef 100644
--- a/nix/ext/versions.json
+++ b/nix/ext/versions.json
@@ -259,6 +259,15 @@
       "hash": "sha256-DOmxdLuYlRoQRprN4tni6JyXZ3nWaEqVQU0DNSYRYTc=",
       "pgrx": "0.16.1",
       "rust": "1.88.0"
+    },
+    "1.6.2": {
+      "postgresql": [
+        "15",
+        "17"
+      ],
+      "hash": "sha256-/qpAfou/shsLKyUmJsya/Zph9nhdtQwXOcXpqmsOnIw=",
+      "pgrx": "0.19.2",
+      "rust": "1.97.1"
     }
   },
   "pg_net": {