diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 497447e628..1c95314f31 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -16,7 +16,10 @@ jobs:
     - uses: actions/checkout@v6
       with:
         submodules: recursive
-
+    - name: Fix submodule sync
+      run: |
+           git submodule sync --recursive
+           git submodule update --init --recursive
     - name: Get specific submodule hash
       id: core-v-submodule-hash
       run: |
@@ -133,9 +136,10 @@ jobs:
     runs-on: ubuntu-latest
     env:
       SPIKE_TANDEM: 1
+      RISCV: ${{ github.workspace }}/tools/riscv-toolchain
     strategy:
       matrix:
-        testcase:  [ dv-riscv-arch-test, cv32a6_tests ]
+        testcase:  [ dv-riscv-arch-test, cv32a6_tests, wrapper-cv32a65x-act]
         config:    [ cv32a65x ]
         simulator: [ veri-testharness ]
     needs:
diff --git a/.gitmodules b/.gitmodules
index e87394db64..d1e8b0b8c2 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -52,3 +52,6 @@
 [submodule "corev_apu/fpga/src/gpio"]
 	path = corev_apu/fpga/src/gpio
 	url = https://github.com/pulp-platform/gpio.git
+[submodule "external/act4"]
+	path = external/act4
+	url = https://github.com/riscv-non-isa/riscv-arch-test.git
diff --git a/external/act4 b/external/act4
new file mode 160000
index 0000000000..aec3ea396f
--- /dev/null
+++ b/external/act4
@@ -0,0 +1 @@
+Subproject commit aec3ea396f254f37a7d0aba1179a7c7e2068a41a
diff --git a/verif/core-v-verif b/verif/core-v-verif
index b3149ab0da..60e57248c4 160000
--- a/verif/core-v-verif
+++ b/verif/core-v-verif
@@ -1 +1 @@
-Subproject commit b3149ab0da3ac8bf2179e24595a4b7a860b668ff
+Subproject commit 60e57248c48b0f8f90cf52af20aecc5c16e9d6d8
diff --git a/verif/regress/wrapper-cv32a65x-act.sh b/verif/regress/wrapper-cv32a65x-act.sh
new file mode 100755
index 0000000000..6d9f6f4467
--- /dev/null
+++ b/verif/regress/wrapper-cv32a65x-act.sh
@@ -0,0 +1,62 @@
+#!/bin/bash
+# Run ACT 4.0 tests on cv32a65x via Makefile targets
+
+# where are the tools
+if ! [ -n "$RISCV" ]; then
+  echo "Error: RISCV variable undefined"
+  exit 1
+fi
+
+if ! [ -n "$DV_SIMULATORS" ]; then
+  DV_SIMULATORS=veri-testharness,spike
+fi
+
+# install the required tools
+if [[ "$DV_SIMULATORS" == *"veri-testharness"* ]]; then
+  source ./verif/regress/install-verilator.sh
+fi
+source ./verif/regress/install-spike.sh
+
+# setup sim env
+source ./verif/sim/setup-env.sh
+
+if [ ! -d "external/act4" ]; then
+  echo "ERROR: ACT4 submodule missing"
+  exit 1
+fi
+
+echo "$SPIKE_INSTALL_DIR"
+
+set -e
+
+# ================== CONFIGURATION ==================
+export CVA6_REPO_DIR="$(pwd)"
+export ACT4_PKG="$CVA6_REPO_DIR/external/act4"
+export TARGET_RTL="cv32a65x"
+export CV_SW_PREFIX="riscv64-unknown-elf-"
+export max_cycles=2000000
+
+echo "Environment Setup Complete"
+
+# Build the Verilator model
+echo "Building Verilator model for ${TARGET_RTL}"
+make verilate target="$TARGET_RTL" -j$(nproc)
+
+cd "${CVA6_REPO_DIR}/verif/sim"
+
+# Run generation and certification via Makefile
+# This triggers the 'gen' then 'certify' targets defined in verif/sim/Makefile
+echo "Starting ACT Regression (Generation + RTL Simulation)"
+make gen-certify target="$TARGET_RTL"
+
+#Display Summary
+# Path derived from SIM_RESULTS and VERI_LOG_DIR in Makefile
+SUMMARY_FILE="${CVA6_REPO_DIR}/verif/sim/simulation_results/certification_summary.txt"
+
+if [ -f "${SUMMARY_FILE}" ]; then
+    echo ""
+    cat "${SUMMARY_FILE}"
+else
+    echo "Error: Summary file not found at ${SUMMARY_FILE}"
+    exit 1
+fi
diff --git a/verif/sim/Makefile b/verif/sim/Makefile
index 05efa32b57..ee922dedf1 100644
--- a/verif/sim/Makefile
+++ b/verif/sim/Makefile
@@ -72,6 +72,81 @@ else
   spike_params_final := $(spike_params_final) --extension=cvxif
 endif
 
+
+# ==============================================================================
+# CVA6 ACT 4.0 Certification Targets (cv32a65x)
+# ==============================================================================
+
+# Updated paths for CVA6 directory structure
+certification_PROGRAM_PATH    = $(ACT4_PKG)/work/cv32a65x/elfs
+certification_PROGRAM_RELPATH = ../../vendor_lib/cva6/external/act4/work/cv32a65x/elfs
+VERI_LOG_DIR = $(CVA6_REPO_DIR)/verif/sim/simulation_results
+
+.PHONY: gen
+gen: $(ACT4_PKG)
+	@command -v uv >/dev/null 2>&1 || { echo "Error: 'uv' not found. Install from https://docs.astral.sh/uv/getting-started/installation/"; exit 1; }
+	@echo "* Cleaning ACT4.0 directory..."
+	$(MAKE) -C $(ACT4_PKG) clean
+	@echo "* Generating ACT4.0 tests for CVA6 (cv32a65x)..."
+	# Test generation now relies on the YAML config for extensions and parameters
+	$(MAKE) -C $(ACT4_PKG) \
+		CONFIG_FILES=config/cores/cva6/cv32a65x/test_config.yaml EXTENSIONS=""  EXCLUDE_EXTENSIONS="InterruptsSm,Sm" \
+		--jobs $(shell nproc)
+	@echo "* Tests generated in: $(certification_PROGRAM_PATH)"
+
+.PHONY: certify
+certify: TEST = certification
+certify: 
+	@echo "$(BANNER)"
+	@echo "* Running ALL compliance ELFs with CVA6 Verilator Model"
+	@echo "$(BANNER)"
+	@set -e; \
+	mkdir -p "$(VERI_LOG_DIR)"; \
+	SUMMARY="$(VERI_LOG_DIR)/certification_summary.txt"; \
+	echo "RESULT  TEST" > "$$SUMMARY"; \
+	echo "------  ----" >> "$$SUMMARY"; \
+	ROOT="$(certification_PROGRAM_PATH)"; \
+	ELFS="$$(find -L "$$ROOT" \( -type f -o -type l \) -a \( -iname '*.elf' -o -iname '*.elf32' \) 2>/dev/null | sort)"; \
+	if [ -z "$$ELFS" ]; then \
+	  echo "No .elf files found under $$ROOT"; \
+	  exit 2; \
+	fi; \
+	PASS=0; FAIL=0; TOTAL=0; \
+	for ELF in $$ELFS; do \
+	  TOTAL=$$((TOTAL+1)); \
+	  REL="$${ELF#$$ROOT/}"; \
+	  LOG="$(VERI_LOG_DIR)/$${REL%.*}.log"; \
+	  mkdir -p "$$(dirname "$$LOG")"; \
+	  # CVA6 requires the exact tohost address to be passed as a plusarg\
+	  TOHOST_ADDR=$$(riscv64-unknown-elf-nm -B $$ELF | grep -w tohost | cut -d' ' -f1); \
+	  set +e; \
+	  # Using the CVA6 Variane_testharness binary directly \
+	  $(CVA6_REPO_DIR)/work-ver/Variane_testharness \
+	    $$ELF \
+	    +elf_file=$$ELF \
+	    +tohost_addr=0x$$TOHOST_ADDR \
+	    +signature=$$ELF.signature_output \
+	    > "$$LOG" 2>&1; \
+	  RC=$$?; \
+	  set -e; \
+	  # CVA6 testbench signals success with "ALL TESTS PASSED"\
+	  if [ $$RC -eq 0 ] && grep -q "PASSED" "$$LOG"; then \
+	    echo "PASS    $$REL" | tee -a "$$SUMMARY"; \
+	    PASS=$$((PASS+1)); \
+	  else \
+	    echo "FAIL    $$REL" | tee -a "$$SUMMARY"; \
+	    FAIL=$$((FAIL+1)); \
+	  fi; \
+	done; \
+	echo "" | tee -a "$$SUMMARY"; \
+	echo "TOTAL=$$TOTAL PASS=$$PASS FAIL=$$FAIL" | tee -a "$$SUMMARY"; \
+	echo "Summary saved to: $$SUMMARY"; \
+	true
+
+.PHONY: gen-certify
+gen-certify: gen certify
+
+
 ##############################################
 # Waveform configuration
 ##############################################