diff --git a/contrib/teamcity/build-configurations.json b/contrib/teamcity/build-configurations.json
--- a/contrib/teamcity/build-configurations.json
+++ b/contrib/teamcity/build-configurations.json
@@ -180,6 +180,13 @@
                 "src/secp256k1/libsecp256k1*": "lib"
             }
         },
+        "build-seeder": {
+            "script": "builds/build-seeder.sh",
+            "templates": [
+                "common_unix_artifacts"
+            ],
+            "timeout": 600
+        },
         "build-tsan": {
             "script": "builds/build-tsan.sh",
             "templates": [
diff --git a/contrib/teamcity/builds/build-seeder.sh b/contrib/teamcity/builds/build-seeder.sh
new file mode 100755
--- /dev/null
+++ b/contrib/teamcity/builds/build-seeder.sh
@@ -0,0 +1,12 @@
+#!/usr/bin/env bash
+
+export LC_ALL=C.UTF-8
+
+set -euxo pipefail
+
+# shellcheck source=../ci-fixture.sh
+source "${TOPLEVEL}/contrib/teamcity/ci-fixture.sh"
+
+build_with_cmake --Werror
+
+ninja check-seeder