diff --git a/kubernetes/deployment.yaml b/kubernetes/deployment.yaml
index 1835fa9..2ebc053 100644
--- a/kubernetes/deployment.yaml
+++ b/kubernetes/deployment.yaml
@@ -26,7 +26,7 @@ spec:
             app: dpplint
       containers:
       - name: dpplint
-        image: oydeu/dpplint@sha256:b2a3830a66ec00ccc36eff0e4fd6f52c74cb7da1cd864ca1ac711a735f27b5a1
+        image: oydeu/dpplint@sha256:bf49962f61eea1998486462af28dc504a0b1f09143554ecf518eeb9298f59094
         imagePullPolicy: IfNotPresent
         ports:
         - containerPort: 3000
diff --git a/test/integration/validations_test.rb b/test/integration/validations_test.rb
index cd0fcd8..ca4c910 100644
--- a/test/integration/validations_test.rb
+++ b/test/integration/validations_test.rb
@@ -61,13 +61,40 @@ def criterion(result, id) = result["criteria"].find { |c| c["id"] == id }
     assert_equal "failed", criterion(lint(reference.merge("uniqueProductIdentifier" => long)), "DPP-REG-024")["result"]
   end
 
+  test "value data type that EN 18223 excludes fails" do
+    assert_equal "passed", criterion(lint(reference), "DPP-DAT-026")["result"]
+    passport = reference
+    passport["elements"][0]["elements"][0]["valueDataType"] = "xsd:token"
+    result = criterion(lint(passport), "DPP-DAT-026")
+    assert_equal "failed", result["result"]
+    assert_match(/derived from string/, result["messages"].first["message"])
+  end
+
+  test "identifiers outside ISO/IEC 646 or the URI syntax fail" do
+    assert_equal "passed", criterion(lint(reference), "DPP-ID-015")["result"]
+    passport = reference.merge("uniqueProductIdentifier" => "https://dpp.example.org/01/04012345000016/21/\u00c41")
+    assert_equal "failed", criterion(lint(passport), "DPP-ID-015")["result"], "non-ASCII character"
+    passport = reference.merge("economicOperatorId" => "did:web:example.org:operator 1")
+    assert_equal "failed", criterion(lint(passport), "DPP-ID-015")["result"], "space in a URI"
+    passport = reference.merge("uniqueProductIdentifier" => "https://dpp.example.org/01/04012345000016/21/A%C3%841")
+    assert_equal "passed", criterion(lint(passport), "DPP-ID-015")["result"], "percent-encoded"
+  end
+
+  test "product DID with another method than did:web, did:ethr or did:ebsi gives a warning" do
+    assert_equal "skipped", criterion(lint(reference), "DPP-ID-054")["result"], "product identifier is no DID"
+    result = criterion(lint(reference.merge("uniqueProductIdentifier" => "did:key:z6MkhaXgBZDvotDkL5257faiztiGiC2QtKLGpbnnEGta2doK")), "DPP-ID-054")
+    assert_equal "warning", result["result"]
+    assert_match(/did:web, did:ethr or did:ebsi/, result["messages"].first["message"])
+    assert_equal "passed", criterion(lint(reference.merge("uniqueProductIdentifier" => "did:web:dpp.example.org:product:4711")), "DPP-ID-054")["result"]
+  end
+
   test "optional facility identifier is skipped when absent" do
     assert_equal "skipped", criterion(lint(reference), "DPP-ID-010")["result"]
   end
 
   test "checks that request the product identifier need one" do
     result = lint(reference)
-    %w[DPP-ID-001 DPP-ID-013 DPP-DAT-003 DPP-DAT-016 DPP-SEC-014].each do |id|
+    %w[DPP-ID-001 DPP-ID-013 DPP-DAT-003 DPP-DAT-016 DPP-SEC-014 DPP-SEC-020].each do |id|
       assert_equal "skipped", criterion(result, id)["result"], id
     end
     assert_equal "rated by dpp-validator from its daily runs", criterion(result, "DPP-ID-002")["reason"]