diff --git a/vendor/google_riscv-dv.lock.hjson b/vendor/google_riscv-dv.lock.hjson
index 8d381592..cacc3a39 100644
--- a/vendor/google_riscv-dv.lock.hjson
+++ b/vendor/google_riscv-dv.lock.hjson
@@ -9,6 +9,6 @@
   upstream:
   {
     url: https://github.com/google/riscv-dv
-    rev: 9c2b007eea5baed25dc9b4c3181c2f328f98a2af
+    rev: c6acc1897429f5245cc89b2ecee2e3eefdefd18d
   }
 }
diff --git a/vendor/google_riscv-dv/src/isa/riscv_instr.sv b/vendor/google_riscv-dv/src/isa/riscv_instr.sv
index 00effeaa..f44e972a 100644
--- a/vendor/google_riscv-dv/src/isa/riscv_instr.sv
+++ b/vendor/google_riscv-dv/src/isa/riscv_instr.sv
@@ -161,6 +161,9 @@ class riscv_instr extends uvm_object;
         end
       end
     end
+    if (!cfg.no_ecall) begin
+      basic_instr = {basic_instr, ECALL};
+    end
     if (cfg.no_dret == 0) begin
       basic_instr = {basic_instr, DRET};
     end
diff --git a/vendor/google_riscv-dv/src/riscv_instr_gen_config.sv b/vendor/google_riscv-dv/src/riscv_instr_gen_config.sv
index 96a93e2b..74cf189f 100644
--- a/vendor/google_riscv-dv/src/riscv_instr_gen_config.sv
+++ b/vendor/google_riscv-dv/src/riscv_instr_gen_config.sv
@@ -161,6 +161,8 @@ class riscv_instr_gen_config extends uvm_object;
   bit                    no_load_store;      // No load/store instruction
   bit                    no_csr_instr;       // No csr instruction
   bit                    no_ebreak = 1;      // No ebreak instruction
+  // Only enable ecall if you have overriden the test_done mechanism.
+  bit                    no_ecall = 1;       // No ecall instruction
   bit                    no_dret = 1;        // No dret instruction
   bit                    no_fence;           // No fence instruction
   bit                    no_wfi = 1;         // No WFI instruction
@@ -485,6 +487,7 @@ class riscv_instr_gen_config extends uvm_object;
     `uvm_field_int(no_load_store, UVM_DEFAULT)
     `uvm_field_int(no_csr_instr, UVM_DEFAULT)
     `uvm_field_int(no_ebreak, UVM_DEFAULT)
+    `uvm_field_int(no_ecall, UVM_DEFAULT)
     `uvm_field_int(no_dret, UVM_DEFAULT)
     `uvm_field_int(no_fence, UVM_DEFAULT)
     `uvm_field_int(no_wfi, UVM_DEFAULT)
@@ -552,6 +555,7 @@ class riscv_instr_gen_config extends uvm_object;
     get_int_arg_value("+num_of_sub_program=", num_of_sub_program);
     get_int_arg_value("+instr_cnt=", instr_cnt);
     get_bool_arg_value("+no_ebreak=", no_ebreak);
+    get_bool_arg_value("+no_ecall=", no_ecall);
     get_bool_arg_value("+no_dret=", no_dret);
     get_bool_arg_value("+no_wfi=", no_wfi);
     get_bool_arg_value("+no_branch_jump=", no_branch_jump);