diff --git a/.github/actions/run-patina-qemu-validation/action.yml b/.github/actions/run-patina-qemu-validation/action.yml
index 05da555..4213427 100644
--- a/.github/actions/run-patina-qemu-validation/action.yml
+++ b/.github/actions/run-patina-qemu-validation/action.yml
@@ -41,9 +41,6 @@ inputs:
     description: Shut down QEMU after running ('true' or 'false').
     required: false
     default: 'false'
-  toolchain:
-    description: Rust toolchain tag.
-    required: true
 
 runs:
   using: composite
@@ -62,7 +59,6 @@ runs:
         PRE_COMPILED_ROM: ${{ inputs.pre-compiled-rom }}
         QEMU_PATH: ${{ inputs.qemu-path }}
         SHUTDOWN_AFTER_RUN: ${{ inputs.shutdown-after-run }}
-        TOOLCHAIN: ${{ inputs.toolchain }}
       run: |
         import json, os, subprocess, sys
 
@@ -77,7 +73,6 @@ runs:
             "pre_compiled_rom": os.environ["PRE_COMPILED_ROM"],
             "qemu_path": os.environ.get("QEMU_PATH", ""),
             "shutdown_after_run": os.environ.get("SHUTDOWN_AFTER_RUN", "false").lower() == "true",
-            "toolchain": os.environ["TOOLCHAIN"],
         })
 
         script = os.path.join(os.environ["ACTION_PATH"], "run_qemu_validation.py")
diff --git a/.github/actions/run-patina-qemu-validation/run_qemu_validation.py b/.github/actions/run-patina-qemu-validation/run_qemu_validation.py
index 7740606..59dc404 100644
--- a/.github/actions/run-patina-qemu-validation/run_qemu_validation.py
+++ b/.github/actions/run-patina-qemu-validation/run_qemu_validation.py
@@ -33,8 +33,6 @@
                       needed on Windows when QEMU is not on PATH. Default: "".
   shutdown_after_run  (bool, optional)    Shut down QEMU after running.
                       Default: false.
-  toolchain           (string, required)  Rust toolchain tag (e.g. "GCC5" or
-                      "VS2022").
 """
 
 import argparse
@@ -188,7 +186,6 @@ def main() -> int:
         "--patina-dxe-core-repo", config["patina_dxe_core_repo"],
         "--platform", config["platform"],
         "--pre-compiled-rom", config["pre_compiled_rom"],
-        "--toolchain", config["toolchain"],
     ]
 
     if config.get("qemu_path"):
diff --git a/.github/workflows/PatinaQemuPrValidation.yml b/.github/workflows/PatinaQemuPrValidation.yml
index b303686..d47bda5 100644
--- a/.github/workflows/PatinaQemuPrValidation.yml
+++ b/.github/workflows/PatinaQemuPrValidation.yml
@@ -574,7 +574,6 @@ jobs:
           platform: ${{ matrix.platform }}
           pre-compiled-rom: ${{ env.FW_DIR }}/${{ matrix.rom_subpath }}
           shutdown-after-run: 'true'
-          toolchain: ${{ needs.vars.outputs['linux-toolchain'] }}
 
       - name: Upload QEMU Linux ${{ matrix.platform }} Logs
         if: always()
@@ -754,7 +753,6 @@ jobs:
           pre-compiled-rom: ${{ env.FW_DIR }}/Q35/DEBUG-VS2022/QEMUQ35_CODE.fd
           qemu-path: ${{ steps.qemu-path.outputs.qemu_exec }}
           shutdown-after-run: 'true'
-          toolchain: ${{ needs.vars.outputs['windows-toolchain'] }}
 
       - name: Upload QEMU Windows Logs
         if: always()