diff --git a/.github/workflows/xtest.yml b/.github/workflows/xtest.yml
index 04e8b283..e2ffead2 100644
--- a/.github/workflows/xtest.yml
+++ b/.github/workflows/xtest.yml
@@ -28,6 +28,11 @@ on:
         type: string
         default: all
         description: "SDK to focus on (go, js, java, all)"
+      dpop-challenge:
+        required: false
+        type: boolean
+        default: false
+        description: "Enable DPoP nonce challenge on KAS instances"
   workflow_call:
     inputs:
       platform-ref:
@@ -50,6 +55,10 @@ on:
         required: false
         type: string
         default: all
+      dpop-challenge:
+        required: false
+        type: boolean
+        default: false
   schedule:
     - cron: "30 6 * * *" # 0630 UTC
     - cron: "0 5 * * 1,3" # 500 UTC (Monday, Wednesday)
@@ -297,13 +306,14 @@ jobs:
       ######## SPIN UP PLATFORM BACKEND #############
       - name: Check out and start up platform with deps/containers
         id: run-platform
-        uses: opentdf/platform/test/start-up-with-containers@11af44a5d4826ed281bf2e0e4e31d6ff6154b393  # pqc-enabled
+        uses: opentdf/platform/test/start-up-with-containers@0612ea897264e3c621ce076029a5e1e3f2d3971e  # main
         with:
           platform-ref: ${{ fromJSON(needs.resolve-versions.outputs.platform-tag-to-sha)[matrix.platform-tag] }}
           ec-tdf-enabled: true
           extra-keys: ${{ steps.load-extra-keys.outputs.EXTRA_KEYS }}
           log-type: json
           pqc-enabled: ${{ steps.pqc-check.outputs.supported == 'true' }}
+          dpop-challenge-enabled: ${{ inputs.dpop-challenge || false }}
 
       - name: Install uv
         uses: astral-sh/setup-uv@fac544c07dec837d0ccb6301d7b5580bf5edae39 # v8.2.0
@@ -591,7 +601,7 @@ jobs:
       - name: Start additional kas
         id: kas-alpha
         if: ${{ steps.multikas.outputs.supported == 'true' }}
-        uses: opentdf/platform/test/start-additional-kas@11af44a5d4826ed281bf2e0e4e31d6ff6154b393  # pqc-enabled
+        uses: opentdf/platform/test/start-additional-kas@0612ea897264e3c621ce076029a5e1e3f2d3971e  # main: require_nonce on additional KAS
         with:
           ec-tdf-enabled: true
           kas-name: alpha
@@ -599,11 +609,12 @@ jobs:
           log-type: json
           pqc-enabled: ${{ steps.pqc-check.outputs.supported == 'true' }}
           root-key: ${{ steps.km-check.outputs.root_key }}
+          dpop-challenge-enabled: ${{ inputs.dpop-challenge || false }}
 
       - name: Start additional kas
         id: kas-beta
         if: ${{ steps.multikas.outputs.supported == 'true' }}
-        uses: opentdf/platform/test/start-additional-kas@11af44a5d4826ed281bf2e0e4e31d6ff6154b393  # pqc-enabled
+        uses: opentdf/platform/test/start-additional-kas@0612ea897264e3c621ce076029a5e1e3f2d3971e  # main: require_nonce on additional KAS
         with:
           ec-tdf-enabled: true
           kas-name: beta
@@ -611,11 +622,12 @@ jobs:
           log-type: json
           pqc-enabled: ${{ steps.pqc-check.outputs.supported == 'true' }}
           root-key: ${{ steps.km-check.outputs.root_key }}
+          dpop-challenge-enabled: ${{ inputs.dpop-challenge || false }}
 
       - name: Start additional kas
         id: kas-gamma
         if: ${{ steps.multikas.outputs.supported == 'true' }}
-        uses: opentdf/platform/test/start-additional-kas@11af44a5d4826ed281bf2e0e4e31d6ff6154b393  # pqc-enabled
+        uses: opentdf/platform/test/start-additional-kas@0612ea897264e3c621ce076029a5e1e3f2d3971e  # main: require_nonce on additional KAS
         with:
           ec-tdf-enabled: true
           kas-name: gamma
@@ -623,11 +635,12 @@ jobs:
           log-type: json
           pqc-enabled: ${{ steps.pqc-check.outputs.supported == 'true' }}
           root-key: ${{ steps.km-check.outputs.root_key }}
+          dpop-challenge-enabled: ${{ inputs.dpop-challenge || false }}
 
       - name: Start additional kas
         id: kas-delta
         if: ${{ steps.multikas.outputs.supported == 'true' }}
-        uses: opentdf/platform/test/start-additional-kas@11af44a5d4826ed281bf2e0e4e31d6ff6154b393  # pqc-enabled
+        uses: opentdf/platform/test/start-additional-kas@0612ea897264e3c621ce076029a5e1e3f2d3971e  # main: require_nonce on additional KAS
         with:
           ec-tdf-enabled: true
           kas-port: 8484
@@ -635,11 +648,12 @@ jobs:
           log-type: json
           pqc-enabled: ${{ steps.pqc-check.outputs.supported == 'true' }}
           root-key: ${{ steps.km-check.outputs.root_key }}
+          dpop-challenge-enabled: ${{ inputs.dpop-challenge || false }}
 
       - name: Start additional KM kas (km1)
         id: kas-km1
         if: ${{ steps.multikas.outputs.supported == 'true' }}
-        uses: opentdf/platform/test/start-additional-kas@11af44a5d4826ed281bf2e0e4e31d6ff6154b393  # pqc-enabled
+        uses: opentdf/platform/test/start-additional-kas@0612ea897264e3c621ce076029a5e1e3f2d3971e  # main: require_nonce on additional KAS
         with:
           ec-tdf-enabled: true
           key-management: ${{ steps.km-check.outputs.supported }}
@@ -648,11 +662,12 @@ jobs:
           log-type: json
           pqc-enabled: ${{ steps.pqc-check.outputs.supported == 'true' }}
           root-key: ${{ steps.km-check.outputs.root_key }}
+          dpop-challenge-enabled: ${{ inputs.dpop-challenge || false }}
 
       - name: Start additional KM kas (km2)
         id: kas-km2
         if: ${{ steps.multikas.outputs.supported == 'true' }}
-        uses: opentdf/platform/test/start-additional-kas@11af44a5d4826ed281bf2e0e4e31d6ff6154b393  # pqc-enabled
+        uses: opentdf/platform/test/start-additional-kas@0612ea897264e3c621ce076029a5e1e3f2d3971e  # main: require_nonce on additional KAS
         with:
           ec-tdf-enabled: true
           kas-name: km2
@@ -661,6 +676,7 @@ jobs:
           log-type: json
           pqc-enabled: ${{ steps.pqc-check.outputs.supported == 'true' }}
           root-key: ${{ steps.km-check.outputs.root_key }}
+          dpop-challenge-enabled: ${{ inputs.dpop-challenge || false }}
 
       - name: Run attribute based configuration tests
         if: ${{ steps.multikas.outputs.supported == 'true' }}
diff --git a/xtest/fixtures/obligations.py b/xtest/fixtures/obligations.py
index 953aee05..29a69cbd 100644
--- a/xtest/fixtures/obligations.py
+++ b/xtest/fixtures/obligations.py
@@ -17,7 +17,8 @@
 def otdf_client_scs(otdfctl: OpentdfCommandLineTool) -> abac.SubjectConditionSet:
     """
     Creates a standard subject condition set for OpenTDF clients.
-    This condition set matches client IDs 'opentdf' or 'opentdf-sdk'.
+    This condition set matches client IDs 'opentdf', 'opentdf-sdk', or
+    'opentdf-dpop' (the DPoP-bound client used by the DPoP tests).
 
     Returns:
         abac.SubjectConditionSet: The created subject condition set
@@ -32,7 +33,11 @@ def otdf_client_scs(otdfctl: OpentdfCommandLineTool) -> abac.SubjectConditionSet
                             abac.Condition(
                                 subject_external_selector_value=".clientId",
                                 operator=abac.SubjectMappingOperatorEnum.IN,
-                                subject_external_values=["opentdf", "opentdf-sdk"],
+                                subject_external_values=[
+                                    "opentdf",
+                                    "opentdf-sdk",
+                                    "opentdf-dpop",
+                                ],
                             )
                         ],
                     )
diff --git a/xtest/sdk/java/cli.sh b/xtest/sdk/java/cli.sh
index cece9630..aeca8ad3 100755
--- a/xtest/sdk/java/cli.sh
+++ b/xtest/sdk/java/cli.sh
@@ -42,6 +42,30 @@ else
   exit 1
 fi
 
+# Cache `java -jar cmdline.jar help [...]` output to avoid paying JVM startup
+# (typically 150-500ms) for the capability probes on every encrypt/decrypt.
+# Keyed by the jar's mtime so a reinstall invalidates the cache. stderr is
+# discarded to keep JVM warnings (reflective-access, agent notices) out of logs.
+jar_help() {
+  local jar="$SCRIPT_DIR/cmdline.jar"
+  local mtime
+  mtime=$(stat -c %Y "$jar" 2>/dev/null || stat -f %m "$jar" 2>/dev/null || echo 0)
+  local key
+  key=$(printf '%s' "$*" | tr -c 'a-zA-Z0-9' '_')
+  local uid
+  uid=$(id -u 2>/dev/null || echo default)
+  local cache="${TMPDIR:-/tmp}/xtest-java-help-${uid}-${mtime}-${key}"
+  if [[ ! -f "$cache" ]]; then
+    # Write to a process-unique temp file, then rename: concurrent xdist
+    # workers see either no cache or the complete file, never a partial read.
+    local tmp="${cache}.$$"
+    java -jar "$jar" help "$@" >"$tmp" 2>/dev/null
+    mv -f "$tmp" "$cache"
+  fi
+  cat "$cache"
+  return 0
+}
+
 if [ "$1" == "supports" ]; then
   case "$2" in
     autoconfigure | ns_grants)
@@ -118,8 +142,8 @@ if [ "$1" == "supports" ]; then
       exit $?
       ;;
     dpop_nonce_challenge)
-      echo "dpop_nonce_challenge not supported"
-      exit 1
+      java -jar "$SCRIPT_DIR"/cmdline.jar supports dpop_nonce_challenge
+      exit $?
       ;;
     *)
       echo "Unknown feature: $2"
@@ -135,7 +159,7 @@ args=(
 )
 
 # when we added support for KAS allowlist, we changed the platform endpoint format to require scheme
-if java -jar "$SCRIPT_DIR"/cmdline.jar help decrypt | grep kas-allowlist; then
+if jar_help decrypt | grep -q kas-allowlist; then
   args+=("--platform-endpoint=$PLATFORMURL")
 else
   args+=("--platform-endpoint=$PLATFORMENDPOINT")
@@ -197,5 +221,9 @@ if [ -n "$XT_WITH_TARGET_MODE" ]; then
   args+=(--with-target-mode "$XT_WITH_TARGET_MODE")
 fi
 
+if jar_help | grep -q -- '--verbose'; then
+  args+=(--verbose)
+fi
+
 echo java -jar "$SCRIPT_DIR"/cmdline.jar "${args[@]}" --file="$2" ">" "$3"
 java -jar "$SCRIPT_DIR"/cmdline.jar "${args[@]}" --file="$2" >"$3"
diff --git a/xtest/sdk/js/cli.sh b/xtest/sdk/js/cli.sh
index d3160ca3..7e6ded27 100755
--- a/xtest/sdk/js/cli.sh
+++ b/xtest/sdk/js/cli.sh
@@ -18,6 +18,10 @@
 #  XT_WITH_ATTRIBUTES [string] - Attributes to be used for encryption
 #  XT_WITH_MIME_TYPE [string] - MIME type for the encrypted file
 #  XT_WITH_TARGET_MODE [string] - Target spec mode for the encrypted file
+#  XT_WITH_DPOP [string] - Enable DPoP token binding; value selects algorithm (e.g. ES256)
+#  XT_WITH_DPOP_KEY [string] - Path to PEM-encoded PKCS8 private key for DPoP signing
+#  CLIENTID [string] - Override OIDC client ID (default: opentdf)
+#  CLIENTSECRET [string] - Override OIDC client secret (default: secret)
 #
 SCRIPT_DIR=$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" &>/dev/null && pwd)
 
@@ -26,7 +30,7 @@ if grep opentdf/cli "$SCRIPT_DIR/package.json"; then
   CTL=@opentdf/cli
 fi
 
-if [ "$1" == "supports" ]; then
+if [[ "$1" == "supports" ]]; then
   if ! cd "$SCRIPT_DIR"; then
     echo "failed: [cd $SCRIPT_DIR]"
     exit 1
@@ -112,21 +116,29 @@ if [ "$1" == "supports" ]; then
 fi
 
 XTEST_DIR=$SCRIPT_DIR
-while [ "$XTEST_DIR" != "/" ]; do
-  if [ -f "$XTEST_DIR/pyproject.toml" ] && grep -q 'name = "xtest"' "$XTEST_DIR/pyproject.toml"; then
+while [[ "$XTEST_DIR" != "/" ]]; do
+  if [[ -f "$XTEST_DIR/pyproject.toml" ]] && grep -q 'name = "xtest"' "$XTEST_DIR/pyproject.toml"; then
     break
   fi
   XTEST_DIR=$(dirname "$XTEST_DIR")
 done
 
-if [ "$XTEST_DIR" = "/" ]; then
+if [[ "$XTEST_DIR" = "/" ]]; then
   echo "xtest root (pyproject.toml with name = \"xtest\") not found."
   exit 1
 fi
 
+# Capture any caller-set overrides before test.env unconditionally resets them.
+_pre_clientid="${CLIENTID:-}"
+_pre_clientsecret="${CLIENTSECRET:-}"
+
 # shellcheck disable=SC1091
 source "$XTEST_DIR"/test.env
 
+# Restore caller overrides (e.g. from pytest monkeypatch for DPoP client).
+[[ -n "$_pre_clientid" ]] && CLIENTID="$_pre_clientid"
+[[ -n "$_pre_clientsecret" ]] && CLIENTSECRET="$_pre_clientsecret"
+
 src_file=$(realpath "$2")
 dst_file=$(realpath "$(dirname "$3")")/$(basename "$3")
 
@@ -134,14 +146,21 @@ args=(
   --output "$dst_file"
   --kasEndpoint "$KASURL"
   --oidcEndpoint "$KCFULLURL"
-  --auth opentdf:secret
+  --auth "${CLIENTID:-opentdf}:${CLIENTSECRET:-secret}"
 )
 
+if [[ -n "$XT_WITH_DPOP" ]]; then
+  args+=(--dpop "$XT_WITH_DPOP")
+fi
+if [[ -n "$XT_WITH_DPOP_KEY" ]]; then
+  args+=(--dpop-key "$XT_WITH_DPOP_KEY")
+fi
+
 args+=(--containerType tdf3)
 
-if [ -n "$XT_WITH_ATTRIBUTES" ]; then
+if [[ -n "$XT_WITH_ATTRIBUTES" ]]; then
   attributes="$XT_WITH_ATTRIBUTES"
-  if [ -f "$attributes" ]; then
+  if [[ -f "$attributes" ]]; then
     attributes=$(realpath "$attributes")
     echo "Attributes are a file: $attributes"
     args+=(--attributes "$attributes")
@@ -152,13 +171,13 @@ if [ -n "$XT_WITH_ATTRIBUTES" ]; then
   fi
 fi
 
-if [ -n "$XT_WITH_ASSERTIONS" ]; then
+if [[ -n "$XT_WITH_ASSERTIONS" ]]; then
   assertions="$XT_WITH_ASSERTIONS"
-  if [ -f "$assertions" ]; then
+  if [[ -f "$assertions" ]]; then
     assertions=$(realpath "$assertions")
     echo "Assertions are a file: $assertions"
     args+=(--assertions "$assertions")
-  elif [ "$(echo "$assertions" | jq -e . >/dev/null 2>&1 && echo valid || echo invalid)" == "valid" ]; then
+  elif [[ "$(echo "$assertions" | jq -e . >/dev/null 2>&1 && echo valid || echo invalid)" == "valid" ]]; then
     # Assertions are plain json
     echo "Assertions are plain json: $assertions"
     args+=(--assertions "$assertions")
@@ -168,9 +187,9 @@ if [ -n "$XT_WITH_ASSERTIONS" ]; then
   fi
 fi
 
-if [ -n "$XT_WITH_ASSERTION_VERIFICATION_KEYS" ]; then
+if [[ -n "$XT_WITH_ASSERTION_VERIFICATION_KEYS" ]]; then
   verification_keys="$XT_WITH_ASSERTION_VERIFICATION_KEYS"
-  if [ -f "$verification_keys" ]; then
+  if [[ -f "$verification_keys" ]]; then
     verification_keys=$(realpath "$verification_keys")
     echo "Verification keys are a file: $verification_keys"
     args+=(--assertionVerificationKeys "$verification_keys")
@@ -185,39 +204,56 @@ if ! cd "$SCRIPT_DIR"; then
   exit 1
 fi
 
-if [ "$1" == "encrypt" ]; then
+# Echo a CLI invocation with the --auth secret masked, so CI logs never capture
+# client credentials. The real (unmasked) args are still used for execution.
+echo_redacted() {
+  local out=() a mask_next=0
+  for a in "$@"; do
+    if [[ "$mask_next" == 1 ]]; then
+      out+=("${a%%:*}:***")
+      mask_next=0
+    elif [[ "$a" == "--auth" ]]; then
+      out+=("$a")
+      mask_next=1
+    else
+      out+=("$a")
+    fi
+  done
+  echo "${out[@]}"
+  return 0
+}
+
+if [[ "$1" == "encrypt" ]]; then
   if npx $CTL help | grep autoconfigure; then
     args+=(--policyEndpoint "$PLATFORMURL" --autoconfigure true)
   fi
-  if [ -n "$XT_WITH_ECDSA_BINDING" ]; then
-    if [ "$XT_WITH_ECDSA_BINDING" == "true" ]; then
-      args+=(--policyBinding ecdsa)
-    fi
+  if [[ "$XT_WITH_ECDSA_BINDING" == "true" ]]; then
+    args+=(--policyBinding ecdsa)
   fi
-  if [ "$XT_WITH_ECWRAP" == 'true' ]; then
+  if [[ "$XT_WITH_ECWRAP" == 'true' ]]; then
     args+=(--encapKeyType "ec:secp256r1")
   fi
 
-  if [ "$XT_WITH_PLAINTEXT_POLICY" == "true" ]; then
+  if [[ "$XT_WITH_PLAINTEXT_POLICY" == "true" ]]; then
     args+=(--policyType plaintext)
   fi
-  if [ -n "$XT_WITH_TARGET_MODE" ]; then
+  if [[ -n "$XT_WITH_TARGET_MODE" ]]; then
     args+=(--tdfSpecVersion "$XT_WITH_TARGET_MODE")
   fi
 
-  echo npx $CTL encrypt "$src_file" "${args[@]}"
+  echo_redacted npx $CTL encrypt "$src_file" "${args[@]}"
   npx $CTL encrypt "$src_file" "${args[@]}"
-elif [ "$1" == "decrypt" ]; then
-  if [ "$XT_WITH_VERIFY_ASSERTIONS" == 'false' ]; then
+elif [[ "$1" == "decrypt" ]]; then
+  if [[ "$XT_WITH_VERIFY_ASSERTIONS" == 'false' ]]; then
     args+=(--noVerifyAssertions)
   fi
-  if [ "$XT_WITH_ECWRAP" == 'true' ]; then
+  if [[ "$XT_WITH_ECWRAP" == 'true' ]]; then
     args+=(--rewrapKeyType "ec:secp256r1")
   fi
-  if [ -n "$XT_WITH_KAS_ALLOW_LIST" ]; then
+  if [[ -n "$XT_WITH_KAS_ALLOW_LIST" ]]; then
     args+=(--allowList "$XT_WITH_KAS_ALLOW_LIST")
   fi
-  if [ "$XT_WITH_IGNORE_KAS_ALLOWLIST" == "true" ]; then
+  if [[ "$XT_WITH_IGNORE_KAS_ALLOWLIST" == "true" ]]; then
     args+=(--ignoreAllowList)
   fi
   # only ignore allowlist if the kas allowlist fetching from kas registry has not been implemented
@@ -227,7 +263,7 @@ elif [ "$1" == "decrypt" ]; then
     args+=(--ignoreAllowList)
   fi
 
-  echo npx $CTL decrypt "$src_file" "${args[@]}"
+  echo_redacted npx $CTL decrypt "$src_file" "${args[@]}"
   npx $CTL decrypt "$src_file" "${args[@]}"
 else
   echo "Incorrect argument provided"
diff --git a/xtest/test_dpop.py b/xtest/test_dpop.py
index 085f71fc..18844774 100644
--- a/xtest/test_dpop.py
+++ b/xtest/test_dpop.py
@@ -305,6 +305,37 @@ def _post_rewrap(
     )
 
 
+def _post_rewrap_with_nonce_retry(
+    call: RewrapCall,
+    key: DPoPKey,
+    *,
+    access_token: str,
+    auth_scheme: str = "DPoP",
+) -> requests.Response:
+    """POST a rewrap, transparently satisfying a `require_nonce` challenge.
+
+    Mints a fresh DPoP proof (no nonce) and sends it. If the KAS replies with a
+    `401` carrying a `DPoP-Nonce` header (the `use_dpop_nonce` challenge), the
+    proof is re-minted with that nonce and the request is retried once, keeping
+    the same `auth_scheme`. This makes callers agnostic to whether
+    `require_nonce` is enabled on the target KAS: with it off the first request
+    is returned as-is; with it on the second (nonce-bearing) request is.
+    """
+    proof = key.sign_dpop_proof(htm="POST", htu=call.url, access_token=access_token)
+    response = _post_rewrap(
+        call, access_token=access_token, dpop_proof=proof, auth_scheme=auth_scheme
+    )
+    nonce = response.headers.get("DPoP-Nonce")
+    if response.status_code == 401 and nonce:
+        proof = key.sign_dpop_proof(
+            htm="POST", htu=call.url, access_token=access_token, nonce=nonce
+        )
+        response = _post_rewrap(
+            call, access_token=access_token, dpop_proof=proof, auth_scheme=auth_scheme
+        )
+    return response
+
+
 def _assert_unauthorized(response: requests.Response) -> None:
     assert response.status_code == 401, response.text
     # Confirm the rejection is actually a DPoP-related challenge so a 401
@@ -323,9 +354,11 @@ def _skip_unless_dpop_enabled(encrypt_sdk: tdfs.SDK, in_focus: set[tdfs.SDK]) ->
 
 @pytest.fixture(autouse=True)
 def _dpop_client_env(monkeypatch: pytest.MonkeyPatch) -> None:
-    # SDK CLI shims read CLIENTID from the environment; tests in this module
-    # must use the DPoP-bound client provisioned by `service provision keycloak`.
+    # SDK CLI shims read CLIENTID/XT_WITH_DPOP from the environment; tests in
+    # this module must use the DPoP-bound client provisioned by
+    # `service provision keycloak` and enable DPoP proof generation.
     monkeypatch.setenv("CLIENTID", "opentdf-dpop")
+    monkeypatch.setenv("XT_WITH_DPOP", "ES256")
 
 
 def test_dpop_happy_path_roundtrip(
@@ -426,16 +459,14 @@ def test_dpop_bearer_scheme_warns_but_accepted_for_dpop_token(
     dpop_access = _get_dpop_access_token()
     rewrap_call = _signed_rewrap_request(ct_file, dpop_access.key)
 
-    bearer_proof = dpop_access.key.sign_dpop_proof(
-        htm="POST",
-        htu=rewrap_call.url,
-        access_token=dpop_access.token,
-    )
+    # Both calls go through the nonce-retry helper so the test passes whether or
+    # not the target KAS has `require_nonce` enabled: when it is, the lenient
+    # accept (and the WARN) only happen after the nonce challenge is satisfied.
     mark = audit_logs.mark("before_bearer_scheme_request")
-    bearer_response = _post_rewrap(
+    bearer_response = _post_rewrap_with_nonce_retry(
         rewrap_call,
+        dpop_access.key,
         access_token=dpop_access.token,
-        dpop_proof=bearer_proof,
         auth_scheme="Bearer",
     )
 
@@ -447,16 +478,10 @@ def test_dpop_bearer_scheme_warns_but_accepted_for_dpop_token(
     )
 
     # Compliant path control: same proof key, same token, just the right scheme.
-    # Distinct jti via fresh proof so the server's replay cache doesn't reject it.
-    dpop_proof = dpop_access.key.sign_dpop_proof(
-        htm="POST",
-        htu=rewrap_call.url,
-        access_token=dpop_access.token,
-    )
-    dpop_response = _post_rewrap(
+    dpop_response = _post_rewrap_with_nonce_retry(
         rewrap_call,
+        dpop_access.key,
         access_token=dpop_access.token,
-        dpop_proof=dpop_proof,
         auth_scheme="DPoP",
     )
     assert dpop_response.status_code == 200, dpop_response.text