diff --git a/flaresolverr/CHANGELOG.md b/flaresolverr/CHANGELOG.md
index a2636fe4b..b808b5a56 100644
--- a/flaresolverr/CHANGELOG.md
+++ b/flaresolverr/CHANGELOG.md
@@ -1,4 +1,8 @@
 
+## 3.4.1-1 (21-09-2025)
+
+- Fix Chromium startup by hardening the shared memory helper for large reported sizes (thanks to community reports)
+
 ## 3.4.1 (20-09-2025)
 - Update to latest version from FlareSolverr/FlareSolverr (changelog : https://github.com/FlareSolverr/FlareSolverr/releases)
 ## 3.4.0 (26-08-2025)
diff --git a/flaresolverr/config.json b/flaresolverr/config.json
index 2883daaa6..b11cf8bc4 100644
--- a/flaresolverr/config.json
+++ b/flaresolverr/config.json
@@ -80,6 +80,6 @@
   "slug": "flaresolverr",
   "udev": true,
   "url": "https://github.com/alexbelgium/hassio-addons",
-  "version": "3.3.25",
+  "version": "3.4.1-1",
   "webui": "[PROTO:ssl]://[HOST]:[PORT:8191]"
 }
diff --git a/flaresolverr/rootfs/etc/cont-init.d/02-fix-chromium-dev-shm.sh b/flaresolverr/rootfs/etc/cont-init.d/02-fix-chromium-dev-shm.sh
new file mode 100755
index 000000000..2bc3e5342
--- /dev/null
+++ b/flaresolverr/rootfs/etc/cont-init.d/02-fix-chromium-dev-shm.sh
@@ -0,0 +1,29 @@
+#!/usr/bin/env bashio
+# shellcheck shell=bash
+set -euo pipefail
+
+fix_file="/etc/chromium.d/dev-shm"
+
+if [ -f "${fix_file}" ]; then
+    bashio::log.info "Patching Chromium shared memory helper for reliable startup"
+    cat <<'PATCH' > "${fix_file}"
+# shellcheck shell=sh
+# Patched by alexbelgium/hassio-addons to avoid arithmetic errors with large values on some shells.
+shm_avail=$(findmnt -bnr -o avail -T /dev/shm 2>/dev/null)
+
+if python3 - "${shm_avail}" <<'PY'
+import re
+import sys
+
+raw = sys.argv[1] if len(sys.argv) > 1 else ''
+match = re.search(r'\d+', raw)
+value = int(match.group(0)) if match else 0
+LIMIT = 4080218931
+sys.exit(0 if value < LIMIT else 1)
+PY
+then
+    export CHROMIUM_FLAGS="${CHROMIUM_FLAGS} --disable-dev-shm-usage"
+fi
+PATCH
+    chmod 0644 "${fix_file}"
+fi
diff --git a/flaresolverr/rootfs/etc/cont-init.d/99-run.sh b/flaresolverr/rootfs/etc/cont-init.d/99-run.sh
index e25b51762..49aaf2dea 100755
--- a/flaresolverr/rootfs/etc/cont-init.d/99-run.sh
+++ b/flaresolverr/rootfs/etc/cont-init.d/99-run.sh
@@ -1,8 +1,23 @@
-#!/usr/bin/env bashio
+#!/bin/bash
 # shellcheck shell=bash
-set -euo pipefail
+set +eu
 
-bashio::log.warning "Warning - minimum configuration recommended: 2 CPU cores and 4 GB of memory. Otherwise the system may become unresponsive or crash."
+echo "Warning - minimum configuration recommended: 2 CPU cores and 4 GB of memory. Otherwise the system may become unresponsive or crash."
+
+chromium_wrapper="/usr/bin/chromium"
+
+if [[ -f "${chromium_wrapper}" ]]; then
+  if [[ ! -x /bin/bash ]]; then
+    bashio::log.warning "Chromium wrapper patch skipped: /bin/bash is not available."
+  else
+    if grep -q '^#!/bin/sh' "${chromium_wrapper}"; then
+      if grep -q '==' "${chromium_wrapper}"; then
+        bashio::log.info "Adjusting Chromium wrapper to use bash for compatibility with Chromium 140."
+        sed -i '1s|/bin/sh|/bin/bash|' "${chromium_wrapper}"
+      fi
+    fi
+  fi
+fi
 
 ##############
 # LAUNCH APP #
diff --git a/flaresolverr/updater.json b/flaresolverr/updater.json
index ec201f137..2ab9b4eec 100644
--- a/flaresolverr/updater.json
+++ b/flaresolverr/updater.json
@@ -1,5 +1,5 @@
 {
-  "last_update": "20-09-2025",
+  "last_update": "21-09-2025",
   "repository": "alexbelgium/hassio-addons",
   "slug": "flaresolverr",
   "source": "github",