diff --git a/scripts/bundle_clusterfuzz.py b/scripts/bundle_clusterfuzz.py
index 5dcf56e86dc..1b8d59c6ae9 100755
--- a/scripts/bundle_clusterfuzz.py
+++ b/scripts/bundle_clusterfuzz.py
@@ -109,6 +109,7 @@
     '--disable-fp16',
     '--disable-strings',
     '--disable-stack-switching',
+    '--disable-relaxed-atomics',
     '--disable-multibyte',
 ]
 
diff --git a/scripts/clusterfuzz/run.py b/scripts/clusterfuzz/run.py
index b98c5658c50..f7c48b1b047 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 --experimental-wasm-wide-arithmetic'
+FUZZER_FLAGS = '--wasm-staging --experimental-wasm-custom-descriptors --experimental-wasm-js-interop --experimental-wasm-wide-arithmetic'
 
 # Optional V8 flags to add to FUZZER_FLAGS, some of the time.
 OPTIONAL_FUZZER_FLAGS = [
@@ -94,6 +94,7 @@
     '--disable-fp16',
     '--disable-strings',
     '--disable-stack-switching',
+    '--disable-relaxed-atomics',
 ]
 
 
diff --git a/scripts/fuzz_opt.py b/scripts/fuzz_opt.py
index 55dce6dc47c..830504fe323 100755
--- a/scripts/fuzz_opt.py
+++ b/scripts/fuzz_opt.py
@@ -75,6 +75,7 @@
     'fp16',
     'strings',
     'stack-switching',
+    'relaxed-atomics',
     'multibyte',
 ]
 
diff --git a/scripts/test/shared.py b/scripts/test/shared.py
index 5e3cd208270..08d35710b9c 100644
--- a/scripts/test/shared.py
+++ b/scripts/test/shared.py
@@ -266,7 +266,6 @@ def has_shell_timeout():
     '--experimental-wasm-fp16',
     '--experimental-wasm-custom-descriptors',
     '--experimental-wasm-js-interop',
-    '--experimental-wasm-acquire-release',
     '--experimental-wasm-wide-arithmetic',
 ]