diff --git a/rebench/denoise.py b/rebench/denoise.py
index ef2e40dc..45f97e02 100644
--- a/rebench/denoise.py
+++ b/rebench/denoise.py
@@ -191,9 +191,7 @@ def _set_scaling_governor(governor, num_cores):
             filename = (
                 "/sys/devices/system/cpu/cpu" + str(cpu_i) + "/cpufreq/scaling_governor"
             )
-            with open(
-                filename, "w"
-            ) as gov_file:  # pylint: disable=unspecified-encoding
+            with open(filename, "w", encoding="utf-8") as gov_file:
                 gov_file.write(governor + "\n")
     except IOError:
         return "failed"
@@ -208,8 +206,9 @@ def _set_no_turbo(with_no_turbo):
         value = "0"
 
     try:
-        # pylint: disable-next=unspecified-encoding
-        with open("/sys/devices/system/cpu/intel_pstate/no_turbo", "w") as nt_file:
+        with open(
+            "/sys/devices/system/cpu/intel_pstate/no_turbo", "w", encoding="utf-8"
+        ) as nt_file:
             nt_file.write(value + "\n")
     except IOError:
         return "failed"
@@ -218,22 +217,25 @@ def _set_no_turbo(with_no_turbo):
 
 def _configure_perf_sampling(for_profiling):
     try:
-        # pylint: disable-next=unspecified-encoding
-        with open("/proc/sys/kernel/perf_cpu_time_max_percent", "w") as perc_file:
+        with open(
+            "/proc/sys/kernel/perf_cpu_time_max_percent", "w", encoding="utf-8"
+        ) as perc_file:
             if for_profiling:
                 perc_file.write("0\n")
             else:
                 perc_file.write("1\n")
 
-        # pylint: disable-next=unspecified-encoding
-        with open("/proc/sys/kernel/perf_event_max_sample_rate", "w") as sample_file:
+        with open(
+            "/proc/sys/kernel/perf_event_max_sample_rate", "w", encoding="utf-8"
+        ) as sample_file:
             # for profiling we just disabled it above, and then don't need to set it
             if not for_profiling:
                 sample_file.write("1\n")
 
         if for_profiling:
-            # pylint: disable-next=unspecified-encoding
-            with open("/proc/sys/kernel/perf_event_paranoid", "w") as perf_file:
+            with open(
+                "/proc/sys/kernel/perf_event_paranoid", "w", encoding="utf-8"
+            ) as perf_file:
                 perf_file.write("-1\n")
     except IOError:
         return "failed"
@@ -246,16 +248,19 @@ def _configure_perf_sampling(for_profiling):
 
 def _restore_perf_sampling():
     try:
-        # pylint: disable-next=unspecified-encoding
-        with open("/proc/sys/kernel/perf_cpu_time_max_percent", "w") as perc_file:
+        with open(
+            "/proc/sys/kernel/perf_cpu_time_max_percent", "w", encoding="utf-8"
+        ) as perc_file:
             perc_file.write("25\n")
 
-        # pylint: disable-next=unspecified-encoding
-        with open("/proc/sys/kernel/perf_event_max_sample_rate", "w") as sample_file:
+        with open(
+            "/proc/sys/kernel/perf_event_max_sample_rate", "w", encoding="utf-8"
+        ) as sample_file:
             sample_file.write("50000\n")
 
-        # pylint: disable-next=unspecified-encoding
-        with open("/proc/sys/kernel/perf_event_paranoid", "w") as perf_file:
+        with open(
+            "/proc/sys/kernel/perf_event_paranoid", "w", encoding="utf-8"
+        ) as perf_file:
             perf_file.write("3\n")
     except IOError:
         return "failed"