diff --git a/runtime/cudaq/platform/default/rest/helpers/ionq/IonQServerHelper.cpp b/runtime/cudaq/platform/default/rest/helpers/ionq/IonQServerHelper.cpp
index 0225b6fe769..ec906b2f940 100644
--- a/runtime/cudaq/platform/default/rest/helpers/ionq/IonQServerHelper.cpp
+++ b/runtime/cudaq/platform/default/rest/helpers/ionq/IonQServerHelper.cpp
@@ -22,7 +22,7 @@ namespace cudaq {
 /// computation jobs.
 class IonQServerHelper : public ServerHelper {
   static constexpr const char *DEFAULT_URL = "https://api.ionq.co";
-  static constexpr const char *DEFAULT_VERSION = "v0.3";
+  static constexpr const char *DEFAULT_VERSION = "v0.4";
 
 public:
   /// @brief Returns the name of the server helper.
@@ -120,8 +120,8 @@ void IonQServerHelper::initialize(BackendConfig config) {
   parseConfigForCommonParams(config);
 
   // Enable debiasing
-  if (config.find("debias") != config.end())
-    backendConfig["debias"] = config["debias"];
+  if (config.find("debiasing") != config.end())
+    backendConfig["debiasing"] = config["debiasing"];
   if (config.find("sharpen") != config.end())
     backendConfig["sharpen"] = config["sharpen"];
   if (config.find("format") != config.end())
@@ -204,14 +204,14 @@ IonQServerHelper::createJob(std::vector<KernelExecution> &circuitCodes) {
     job["input"]["format"] = "qir";
     job["input"]["data"] = circuitCode.code;
     // Include error mitigation configuration if set in backendConfig
-    if (keyExists("debias")) {
+    if (keyExists("debiasing")) {
       try {
-        bool debiasValue =
-            nlohmann::json::parse(backendConfig["debias"]).get<bool>();
-        job["error_mitigation"]["debias"] = debiasValue;
+        bool debiasingValue =
+            nlohmann::json::parse(backendConfig["debiasing"]).get<bool>();
+        job["error_mitigation"]["debiasing"] = debiasingValue;
       } catch (const nlohmann::json::exception &e) {
         throw std::runtime_error(
-            "Invalid value for 'debias'. It should be a boolean (true/false).");
+            "Invalid value for 'debiasing'. It should be a boolean (true/false).");
       }
     }
 
diff --git a/utils/mock_qpu/ionq/__init__.py b/utils/mock_qpu/ionq/__init__.py
index 616e37b78fc..a5bfd256909 100644
--- a/utils/mock_qpu/ionq/__init__.py
+++ b/utils/mock_qpu/ionq/__init__.py
@@ -87,7 +87,7 @@ async def login(token: Union[str, None] = Header(alias="Authorization",
 # Here we expose a way to post jobs,
 # Must have a Access Token, Job Program must be Adaptive Profile
 # with entry_point tag
-@app.post("/v0.3/jobs")
+@app.post("/v0.4/jobs")
 async def postJob(job: Job,
                   token: Union[str, None] = Header(alias="Authorization",
                                                    default=None)):
@@ -138,7 +138,7 @@ async def postJob(job: Job,
 
 # Retrieve the job, simulate having to wait by counting to 3
 # until we return the job results
-@app.get("/v0.3/jobs")
+@app.get("/v0.4/jobs")
 async def getJob(id: str):
     global countJobGetRequests, createdJobs, numQubitsRequired
 
@@ -152,13 +152,13 @@ async def getJob(id: str):
         "jobs": [{
             "status": "completed",
             "qubits": numQubitsRequired,
-            "results_url": "/v0.3/jobs/{}/results".format(id)
+            "results_url": "/v0.4/jobs/{}/results".format(id)
         }]
     }
     return res
 
 
-@app.get("/v0.3/jobs/{jobId}/results")
+@app.get("/v0.4/jobs/{jobId}/results")
 async def getResults(jobId: str):
     global countJobGetRequests, createdJobs