diff --git a/ruby.c b/ruby.c
index f95d193f78..52a016ae0c 100644
--- a/ruby.c
+++ b/ruby.c
@@ -366,7 +366,7 @@ usage(const char *name, int help, int highlight, int columns)
         M("--yjit-stats",                    "", "Enable collecting YJIT statistics"),
         M("--yjit-trace-exits",              "", "Record Ruby source location when exiting from generated code"),
         M("--yjit-trace-exits-sample-rate",  "", "Trace exit locations only every Nth occurrence"),
-        M("--yjit-exec-mem-size=num",        "", "Size of executable memory block in MiB (default: 64)"),
+        M("--yjit-exec-mem-size=num",        "", "Size of executable memory block in MiB (default: 128)"),
         M("--yjit-call-threshold=num",       "", "Number of calls to trigger JIT (default: 30)"),
         M("--yjit-max-versions=num",         "", "Maximum number of versions per basic block (default: 4)"),
         M("--yjit-greedy-versioning",        "", "Greedy versioning mode (default: disabled)"),
diff --git a/yjit/src/options.rs b/yjit/src/options.rs
index 78a507ce11..f08217bfc2 100644
--- a/yjit/src/options.rs
+++ b/yjit/src/options.rs
@@ -54,7 +54,7 @@ pub struct Options {
 
 // Initialize the options to default values
 pub static mut OPTIONS: Options = Options {
-    exec_mem_size: 64 * 1024 * 1024,
+    exec_mem_size: 128 * 1024 * 1024,
     call_threshold: 30,
     greedy_versioning: false,
     no_type_prop: false,