diff --git a/scripts/bundle_clusterfuzz.py b/scripts/bundle_clusterfuzz.py
index 86ea91a11d5..648c3f33a8e 100755
--- a/scripts/bundle_clusterfuzz.py
+++ b/scripts/bundle_clusterfuzz.py
@@ -110,7 +110,6 @@
     '--disable-strings',
     '--disable-stack-switching',
     '--disable-multibyte',
-    '--disable-wide-arithmetic',
 ]
 
 with tarfile.open(output_file, "w:gz") as tar:
diff --git a/scripts/clusterfuzz/run.py b/scripts/clusterfuzz/run.py
index 7fe9979b3d2..b98c5658c50 100755
--- a/scripts/clusterfuzz/run.py
+++ b/scripts/clusterfuzz/run.py
@@ -33,7 +33,7 @@
 
 # The V8 flags we put in the "fuzzer flags" files, which tell ClusterFuzz how to
 # run V8. By default we apply all staging flags.
-FUZZER_FLAGS = '--wasm-staging --experimental-wasm-custom-descriptors --experimental-wasm-js-interop --experimental-wasm-acquire-release'
+FUZZER_FLAGS = '--wasm-staging --experimental-wasm-custom-descriptors --experimental-wasm-js-interop --experimental-wasm-acquire-release --experimental-wasm-wide-arithmetic'
 
 # Optional V8 flags to add to FUZZER_FLAGS, some of the time.
 OPTIONAL_FUZZER_FLAGS = [
@@ -94,7 +94,6 @@
     '--disable-fp16',
     '--disable-strings',
     '--disable-stack-switching',
-    '--disable-wide-arithmetic',
 ]
 
 
diff --git a/scripts/fuzz_opt.py b/scripts/fuzz_opt.py
index 93b609dbe92..8bc451b962c 100755
--- a/scripts/fuzz_opt.py
+++ b/scripts/fuzz_opt.py
@@ -76,7 +76,6 @@
     'strings',
     'stack-switching',
     'multibyte',
-    'wide-arithmetic',
 ]
 
 
diff --git a/scripts/test/shared.py b/scripts/test/shared.py
index d8211d8143a..5e3cd208270 100644
--- a/scripts/test/shared.py
+++ b/scripts/test/shared.py
@@ -267,6 +267,7 @@ def has_shell_timeout():
     '--experimental-wasm-custom-descriptors',
     '--experimental-wasm-js-interop',
     '--experimental-wasm-acquire-release',
+    '--experimental-wasm-wide-arithmetic',
 ]
 
 # external tools