diff --git a/packages/hoppscotch-agent/src-tauri/Cargo.lock b/packages/hoppscotch-agent/src-tauri/Cargo.lock
index 09d96df2..a5b8f435 100644
--- a/packages/hoppscotch-agent/src-tauri/Cargo.lock
+++ b/packages/hoppscotch-agent/src-tauri/Cargo.lock
@@ -4110,7 +4110,7 @@ checksum = "2b15c43186be67a4fd63bee50d0303afffcef381492ebe2c5d87f324e1b8815c"
 [[package]]
 name = "relay"
 version = "0.1.1"
-source = "git+https://github.com/CuriousCorrelation/relay.git#10aca0e5d74515a6fed231ee9d7220a014f8b184"
+source = "git+https://github.com/CuriousCorrelation/relay.git#7270b956321972269eea7cecdccbb2ae839bd0ff"
 dependencies = [
  "bytes",
  "curl",
diff --git a/packages/hoppscotch-common/src/helpers/kernel/rest/response.ts b/packages/hoppscotch-common/src/helpers/kernel/rest/response.ts
index 338f54a1..11f0d060 100644
--- a/packages/hoppscotch-common/src/helpers/kernel/rest/response.ts
+++ b/packages/hoppscotch-common/src/helpers/kernel/rest/response.ts
@@ -21,6 +21,54 @@ const extractTiming = (response: RelayResponse): number =>
 const extractSize = (response: RelayResponse): number =>
   response.meta?.size?.total ?? 0
 
+/**
+ * Response headers processor to handle multiple `\n` split Set-Cookie
+ * headers.
+ *
+ *
+ * TODO: This is a special case handler, a temporary workaround.
+ * Temporary workaround often get calcified as permanent but a complete
+ * solution, but the other more better option is rather involved,
+ * like swapping `Record`/`HashMap` with a flat array and propagating
+ * the refactor throughout the codebase, from the underlying networking
+ * to the FE.
+ *
+ * The problem with that approach is you lose that O(1) lookup. There's
+ * also little point in going from key-value to key-pair-value since
+ * you'd just be putting this same workaround somewhere else.
+ * A simpler approach is `HashMap<String, Vec<String>>` but even that
+ * doesn't substantially reduces the refactor surface area.
+ * Given all of those issues, a temporary workaround is perhaps the best
+ * solution at the moment.
+ *
+ * Headers should always be present from the `RelayResponse`, this defends
+ * against potential serde/boundary issues between typed conversions.
+ */
+const processHeaders = (
+  headers?: Record<string, string> | null
+): HoppRESTResponseHeader[] => {
+  const processedHeaders: HoppRESTResponseHeader[] = []
+
+  // `headers` should theoretically exist, always
+  for (const [key, value] of Object.entries(headers ?? {})) {
+    if (key.toLowerCase() === "set-cookie") {
+      // To split concatenated `Set-Cookie` headers and create separate header entries,
+      // see `if key.to_lowercase() == "set-cookie" {` in `transfer.rs`
+      const cookieStrings = value
+        .split("\n")
+        .map((s) => s.trim())
+        .filter(Boolean)
+      for (const cookieString of cookieStrings) {
+        processedHeaders.push({ key: "Set-Cookie", value: cookieString })
+      }
+    } else {
+      processedHeaders.push({ key, value })
+    }
+  }
+
+  return processedHeaders
+}
+
 export const RESTResponse = {
   async toResponse(
     response: RelayResponse,
@@ -38,9 +86,7 @@ export const RESTResponse = {
 
     return {
       type: "success",
-      headers: Object.entries(response.headers ?? {}).map(
-        ([key, value]) => ({ key, value }) as HoppRESTResponseHeader
-      ),
+      headers: processHeaders(response.headers),
       body: response.body.body.buffer,
       statusCode: response.status,
       statusText: response.statusText ?? "",
diff --git a/packages/hoppscotch-desktop/plugin-workspace/relay/src/transfer.rs b/packages/hoppscotch-desktop/plugin-workspace/relay/src/transfer.rs
index f0f1bf2d..dde38d9c 100644
--- a/packages/hoppscotch-desktop/plugin-workspace/relay/src/transfer.rs
+++ b/packages/hoppscotch-desktop/plugin-workspace/relay/src/transfer.rs
@@ -53,7 +53,22 @@ impl TransferHandler {
                         let key = key.trim().to_string();
                         let value = value[1..].trim().to_string();
 
-                        headers.entry(key).or_insert(value);
+                        if key.to_lowercase() == "set-cookie" {
+                            // NOTE: Special handling workaround.
+                            // Concatenate multiple `Set-Cookie` headers.
+                            match headers.entry(key) {
+                                std::collections::hash_map::Entry::Occupied(mut e) => {
+                                    let existing = e.get_mut();
+                                    existing.push_str("\n");
+                                    existing.push_str(&value);
+                                }
+                                std::collections::hash_map::Entry::Vacant(e) => {
+                                    e.insert(value);
+                                }
+                            }
+                        } else {
+                            headers.entry(key).or_insert(value);
+                        }
                     }
                 }
                 true
diff --git a/packages/hoppscotch-desktop/plugin-workspace/tauri-plugin-relay/Cargo.lock b/packages/hoppscotch-desktop/plugin-workspace/tauri-plugin-relay/Cargo.lock
index 139218b3..54fc040a 100644
--- a/packages/hoppscotch-desktop/plugin-workspace/tauri-plugin-relay/Cargo.lock
+++ b/packages/hoppscotch-desktop/plugin-workspace/tauri-plugin-relay/Cargo.lock
@@ -2888,7 +2888,7 @@ checksum = "2b15c43186be67a4fd63bee50d0303afffcef381492ebe2c5d87f324e1b8815c"
 [[package]]
 name = "relay"
 version = "0.1.1"
-source = "git+https://github.com/CuriousCorrelation/relay.git#10aca0e5d74515a6fed231ee9d7220a014f8b184"
+source = "git+https://github.com/CuriousCorrelation/relay.git#7270b956321972269eea7cecdccbb2ae839bd0ff"
 dependencies = [
  "bytes",
  "curl",
diff --git a/packages/hoppscotch-desktop/src-tauri/Cargo.lock b/packages/hoppscotch-desktop/src-tauri/Cargo.lock
index 26b7f120..04f3c172 100644
--- a/packages/hoppscotch-desktop/src-tauri/Cargo.lock
+++ b/packages/hoppscotch-desktop/src-tauri/Cargo.lock
@@ -4413,7 +4413,7 @@ checksum = "2b15c43186be67a4fd63bee50d0303afffcef381492ebe2c5d87f324e1b8815c"
 [[package]]
 name = "relay"
 version = "0.1.1"
-source = "git+https://github.com/CuriousCorrelation/relay.git#10aca0e5d74515a6fed231ee9d7220a014f8b184"
+source = "git+https://github.com/CuriousCorrelation/relay.git#7270b956321972269eea7cecdccbb2ae839bd0ff"
 dependencies = [
  "bytes",
  "curl",
@@ -5603,7 +5603,7 @@ dependencies = [
 [[package]]
 name = "tauri-plugin-relay"
 version = "0.1.0"
-source = "git+https://github.com/CuriousCorrelation/tauri-plugin-relay?rev=ff18f776ddeb53dbbdeaf97e1fabc30bdc57c158#ff18f776ddeb53dbbdeaf97e1fabc30bdc57c158"
+source = "git+https://github.com/CuriousCorrelation/tauri-plugin-relay?rev=5d59b97fe331ca62e8be0454ff3f4e5f6185ae70#5d59b97fe331ca62e8be0454ff3f4e5f6185ae70"
 dependencies = [
  "relay",
  "serde",
diff --git a/packages/hoppscotch-desktop/src-tauri/Cargo.toml b/packages/hoppscotch-desktop/src-tauri/Cargo.toml
index 894a2625..eb323716 100644
--- a/packages/hoppscotch-desktop/src-tauri/Cargo.toml
+++ b/packages/hoppscotch-desktop/src-tauri/Cargo.toml
@@ -30,7 +30,7 @@ tauri-plugin-dialog = "2.2.0"
 tauri-plugin-fs = "2.2.0"
 tauri-plugin-deep-link = "2.2.0"
 tauri-plugin-appload = { git = "https://github.com/CuriousCorrelation/tauri-plugin-appload", rev = "e05861959938b57479a1a81fa796735ebbd08c7c" }
-tauri-plugin-relay = { git = "https://github.com/CuriousCorrelation/tauri-plugin-relay", rev = "ff18f776ddeb53dbbdeaf97e1fabc30bdc57c158" }
+tauri-plugin-relay = { git = "https://github.com/CuriousCorrelation/tauri-plugin-relay", rev = "5d59b97fe331ca62e8be0454ff3f4e5f6185ae70" }
 axum = "0.8.1"
 tower-http = { version = "0.6.2", features = ["cors"] }
 random-port = "0.1.1"
diff --git a/packages/hoppscotch-kernel/package.json b/packages/hoppscotch-kernel/package.json
index ca65b10c..5b3dd54f 100644
--- a/packages/hoppscotch-kernel/package.json
+++ b/packages/hoppscotch-kernel/package.json
@@ -57,6 +57,6 @@
     "@tauri-apps/plugin-dialog": "2.0.1",
     "@tauri-apps/plugin-fs": "2.0.2",
     "@tauri-apps/plugin-store": "2.2.0",
-    "@hoppscotch/plugin-relay": "github:CuriousCorrelation/tauri-plugin-relay#ff18f776ddeb53dbbdeaf97e1fabc30bdc57c158"
+    "@hoppscotch/plugin-relay": "github:CuriousCorrelation/tauri-plugin-relay#5d59b97fe331ca62e8be0454ff3f4e5f6185ae70"
   }
 }
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 018b0d3e..97e46487 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -1217,8 +1217,8 @@ importers:
   packages/hoppscotch-kernel:
     dependencies:
       '@hoppscotch/plugin-relay':
-        specifier: github:CuriousCorrelation/tauri-plugin-relay#ff18f776ddeb53dbbdeaf97e1fabc30bdc57c158
-        version: '@CuriousCorrelation/plugin-relay@https://codeload.github.com/CuriousCorrelation/tauri-plugin-relay/tar.gz/ff18f776ddeb53dbbdeaf97e1fabc30bdc57c158'
+        specifier: github:CuriousCorrelation/tauri-plugin-relay#5d59b97fe331ca62e8be0454ff3f4e5f6185ae70
+        version: '@CuriousCorrelation/plugin-relay@https://codeload.github.com/CuriousCorrelation/tauri-plugin-relay/tar.gz/5d59b97fe331ca62e8be0454ff3f4e5f6185ae70'
       '@tauri-apps/api':
         specifier: 2.1.1
         version: 2.1.1
@@ -1853,8 +1853,8 @@ packages:
     resolution: {tarball: https://codeload.github.com/CuriousCorrelation/tauri-plugin-appload/tar.gz/e05861959938b57479a1a81fa796735ebbd08c7c}
     version: 0.1.0
 
-  '@CuriousCorrelation/plugin-relay@https://codeload.github.com/CuriousCorrelation/tauri-plugin-relay/tar.gz/ff18f776ddeb53dbbdeaf97e1fabc30bdc57c158':
-    resolution: {tarball: https://codeload.github.com/CuriousCorrelation/tauri-plugin-relay/tar.gz/ff18f776ddeb53dbbdeaf97e1fabc30bdc57c158}
+  '@CuriousCorrelation/plugin-relay@https://codeload.github.com/CuriousCorrelation/tauri-plugin-relay/tar.gz/5d59b97fe331ca62e8be0454ff3f4e5f6185ae70':
+    resolution: {tarball: https://codeload.github.com/CuriousCorrelation/tauri-plugin-relay/tar.gz/5d59b97fe331ca62e8be0454ff3f4e5f6185ae70}
     version: 0.1.0
 
   '@alloc/quick-lru@5.2.0':
@@ -15538,7 +15538,7 @@ snapshots:
     dependencies:
       '@tauri-apps/api': 2.1.1
 
-  '@CuriousCorrelation/plugin-relay@https://codeload.github.com/CuriousCorrelation/tauri-plugin-relay/tar.gz/ff18f776ddeb53dbbdeaf97e1fabc30bdc57c158':
+  '@CuriousCorrelation/plugin-relay@https://codeload.github.com/CuriousCorrelation/tauri-plugin-relay/tar.gz/5d59b97fe331ca62e8be0454ff3f4e5f6185ae70':
     dependencies:
       '@tauri-apps/api': 2.1.1