diff --git a/deno.json b/deno.json
index e2215b0..7c1c0b7 100644
--- a/deno.json
+++ b/deno.json
@@ -27,7 +27,7 @@
     "file-type": "npm:file-type@^21.0.0",
     "node-cache": "npm:node-cache@^5.1.2",
     "rxjs": "npm:rxjs@^7.8.1",
-    "@flowcore/data-pump": "jsr:@flowcore/data-pump@^0.21.3",
+    "@flowcore/data-pump": "jsr:@flowcore/data-pump@^0.21.4",
     "@flowcore/sdk": "npm:@flowcore/sdk@^4.2.2",
     "postgres": "npm:postgres@^3.4.3",
     "ws": "npm:ws@^8.18.0",
diff --git a/deno.lock b/deno.lock
index 2fb573a..8855667 100644
--- a/deno.lock
+++ b/deno.lock
@@ -5,7 +5,7 @@
     "jsr:@deno/cache-dir@~0.10.3": "0.10.3",
     "jsr:@deno/dnt@~0.41.3": "0.41.3",
     "jsr:@deno/graph@~0.73.1": "0.73.1",
-    "jsr:@flowcore/data-pump@~0.21.3": "0.21.3",
+    "jsr:@flowcore/data-pump@~0.21.4": "0.21.4",
     "jsr:@flowcore/sdk@^4.2.2": "4.2.2",
     "jsr:@flowcore/time-uuid@~0.1.1": "0.1.2",
     "jsr:@std/assert@0.223": "0.223.0",
@@ -69,8 +69,8 @@
     "@deno/graph@0.73.1": {
       "integrity": "cd69639d2709d479037d5ce191a422eabe8d71bb68b0098344f6b07411c84d41"
     },
-    "@flowcore/data-pump@0.21.3": {
-      "integrity": "c18caf7623501b7d3b6d0eb85a577909481950ddf850958208aa7d701d49b0c0",
+    "@flowcore/data-pump@0.21.4": {
+      "integrity": "488532273480244bc6401183f080094a600441fa7f87d6ed3cef9a76f56b2a24",
       "dependencies": [
         "jsr:@flowcore/sdk@^4.2.2",
         "jsr:@flowcore/time-uuid",
@@ -384,7 +384,7 @@
   "workspace": {
     "dependencies": [
       "jsr:@deno/dnt@~0.41.3",
-      "jsr:@flowcore/data-pump@~0.21.3",
+      "jsr:@flowcore/data-pump@~0.21.4",
       "npm:@flowcore/sdk-transformer-core@^2.5.1",
       "npm:@flowcore/sdk@^4.2.2",
       "npm:bun-sqlite-key-value@^1.13.1",
diff --git a/tests/postgres-pathway-state.test.ts b/tests/postgres-pathway-state.test.ts
index efa4d74..7d76a4f 100644
--- a/tests/postgres-pathway-state.test.ts
+++ b/tests/postgres-pathway-state.test.ts
@@ -1,4 +1,4 @@
-import { assertEquals, assertFalse, assertRejects } from "https://deno.land/std@0.224.0/assert/mod.ts"
+import { assert, assertEquals, assertFalse, assertRejects } from "https://deno.land/std@0.224.0/assert/mod.ts"
 import { createPostgresPathwayState, PostgresPathwayState } from "../src/pathways/postgres/postgres-pathway-state.ts"
 
 // Test configuration
@@ -120,13 +120,18 @@ Deno.test({
         port: 54321,
       }
 
-      await assertRejects(
+      const error = await assertRejects(
         async () => {
           const badState = createPostgresPathwayState(badConfig)
           await badState.isProcessed("some-event")
         },
         Error,
-        "ENOTFOUND",
+      )
+      // An unresolvable host is reported differently across resolvers/runners
+      // (ENOTFOUND vs EAI_AGAIN); both mean the host did not resolve.
+      assert(
+        /ENOTFOUND|EAI_AGAIN/.test(error.message),
+        `expected a DNS resolution failure (ENOTFOUND/EAI_AGAIN), got: ${error.message}`,
       )
     })