diff --git a/main.c b/main.c
index 0b96d66..bf08424 100644
--- a/main.c
+++ b/main.c
@@ -15,6 +15,8 @@
 
 #include <systemd/sd-bus.h>
 
+#define VERSION "1.0.0"
+
 #define EXIT_OK 0
 #define EXIT_ARGS 1
 #define EXIT_INIT 2
@@ -42,6 +44,7 @@ static const char *valid_mode[] = {"block", "delay", NULL};
 
 static volatile sig_atomic_t running = 1;
 static volatile sig_atomic_t cleanup_requested = 0;
+static int quiet = 0;
 
 static void handle_sig(int sig) {
   (void)sig;
@@ -344,7 +347,7 @@ static void usage(FILE *f, const char *prog) {
   fprintf(f,
           "Usage: %s -n <pattern> [-n <pattern> ...] "
           "[--what=WHAT] [--mode=MODE]\n"
-          "       [--who=WHO] [--why=WHY] [--poll=SECONDS]\n"
+          "       [--who=WHO] [--why=WHY] [--poll=SECONDS] [-q]\n"
           "\n"
           "Options:\n"
           "  -n, --name PATTERN    Process command-line substring to watch "
@@ -362,7 +365,9 @@ static void usage(FILE *f, const char *prog) {
           "system idle...)\n"
           "  --poll SECONDS        Poll interval in seconds (%.1f-%.1f, "
           "default: %.1f)\n"
-          "  -h, --help            Show this help\n",
+          "  -q, --quiet           Suppress informational output\n"
+          "  -h, --help            Show this help\n"
+          "  -v, --version         Show version\n",
           prog, MIN_POLL_INTERVAL, MAX_POLL_INTERVAL, DEFAULT_POLL_INTERVAL);
 }
 
@@ -483,6 +488,15 @@ int main(int argc, char **argv) {
       free(patterns);
       return EXIT_OK;
 
+    } else if (strcmp(argv[i], "--version") == 0 ||
+               strcmp(argv[i], "-v") == 0) {
+      printf("sin %s\n", VERSION);
+      free(patterns);
+      return EXIT_OK;
+
+    } else if (strcmp(argv[i], "--quiet") == 0 || strcmp(argv[i], "-q") == 0) {
+      quiet = 1;
+
     } else if (argv[i][0] == '-' && argv[i][1] == 'n' && argv[i][2] != '\0') {
       // Support "-npattern" form
       if (npats >= MAX_PATTERNS) {
@@ -548,13 +562,14 @@ int main(int argc, char **argv) {
 
     if (found) {
       if (inh.fd < 0) {
-        fprintf(stderr, "Target process found - acquiring inhibitor\n");
+        if (!quiet)
+          fprintf(stderr, "Target process found - acquiring inhibitor\n");
         if (inhibitor_acquire(&inh) < 0) {
           fprintf(
               stderr,
               "Failed to acquire inhibitor; retrying after poll interval\n");
           exit_code = EXIT_RUNTIME;
-        } else {
+        } else if (!quiet) {
           fprintf(stderr, "Inhibitor acquired (fd=%d)\n", inh.fd);
         }
       }
@@ -573,7 +588,8 @@ int main(int argc, char **argv) {
       }
 
       if (inh.fd >= 0 && running) {
-        fprintf(stderr, "Target exited - releasing inhibitor\n");
+        if (!quiet)
+          fprintf(stderr, "Target exited - releasing inhibitor\n");
         inhibitor_release(&inh);
       }
     } else {
@@ -590,7 +606,7 @@ int main(int argc, char **argv) {
   }
 
   // Cleanup
-  if (cleanup_requested) {
+  if (cleanup_requested && !quiet) {
     fprintf(stderr, "Shutting down gracefully...\n");
   }