diff --git a/tools/internal_ci/linux/grpc_fuzzer_client.cfg b/tools/internal_ci/linux/grpc_fuzzer_client.cfg
index 8c3c7878d30ee68795df446cf2f2c009ec036528..557dc0b390d3881cc85e7c1223dc985bb7d82d39 100644
--- a/tools/internal_ci/linux/grpc_fuzzer_client.cfg
+++ b/tools/internal_ci/linux/grpc_fuzzer_client.cfg
@@ -32,3 +32,4 @@
 
 # Location of the continuous shell script in repository.
 build_file: "grpc/tools/internal_ci/linux/grpc_fuzzer_client.sh"
+timeout_mins: 1440  # 24 hours is the maximum allowed value
diff --git a/tools/internal_ci/linux/grpc_fuzzer_client.sh b/tools/internal_ci/linux/grpc_fuzzer_client.sh
index 81fd4c4114ecf5a32e0794470252f92f313cb717..f9ff13d303e6bb3324f078e318e6a1861c9082fe 100755
--- a/tools/internal_ci/linux/grpc_fuzzer_client.sh
+++ b/tools/internal_ci/linux/grpc_fuzzer_client.sh
@@ -37,4 +37,5 @@ git submodule update --init
 
 # download fuzzer docker image from dockerhub
 export DOCKERHUB_ORGANIZATION=grpctesting
-config=asan-trace-cmp runtime=3600 tools/jenkins/run_fuzzer.sh client_fuzzer
+# runtime 23 * 60 mins
+config=asan-trace-cmp runtime=82800 tools/jenkins/run_fuzzer.sh client_fuzzer