diff --git a/.github/workflows/pr-functional-tests.yml b/.github/workflows/pr-functional-tests.yml
index f2f8fb0c571..7f2d5d12149 100644
--- a/.github/workflows/pr-functional-tests.yml
+++ b/.github/workflows/pr-functional-tests.yml
@@ -34,6 +34,13 @@ jobs:
           cache: 'maven'
           java-version: ${{ matrix.java }}
 
+      - name: Diagnose SCRAM dependency resolution
+        if: always()
+        run: |
+          mvn -B dependency:tree \
+            '-Dincludes=io.vertx:vertx-pg-client,com.ongres.scram:*' \
+            --file extra/pom.xml
+
       - name: Build with Maven
         id: build
         run: |
diff --git a/src/test/groovy/org/prebid/server/functional/testcontainers/Dependencies.groovy b/src/test/groovy/org/prebid/server/functional/testcontainers/Dependencies.groovy
index 22b8e9cecae..d0c65e56898 100644
--- a/src/test/groovy/org/prebid/server/functional/testcontainers/Dependencies.groovy
+++ b/src/test/groovy/org/prebid/server/functional/testcontainers/Dependencies.groovy
@@ -32,6 +32,7 @@ class Dependencies {
             .withUsername("prebid")
             .withPassword("prebid")
             .withInitScript("org/prebid/server/functional/db_psql_schema.sql")
+            .withEnv("POSTGRES_HOST_AUTH_METHOD", "trust")
             .withNetwork(network)
 
     static final InfluxDBContainer influxdbContainer = new InfluxDBContainer<>(DockerImageName.parse("influxdb:1.8.10"))