diff --git a/components/auth-form/index.js b/components/auth-form/index.js
index 2641113..03b2e8f 100644
--- a/components/auth-form/index.js
+++ b/components/auth-form/index.js
@@ -138,7 +138,7 @@ export default function AuthForm({
             endAdornment={
               <InputAdornment position='end'>
                 <IconButton
-                  aria-label='password visibility'
+                  aria-label={showPassword ? 'Masquer le mot de passe' : 'Afficher le mot de passe'}
                   size='large'
                   onClick={handleClickShowPassword}
                   onMouseDown={handleMouseDownPassword}
@@ -167,7 +167,7 @@ export default function AuthForm({
               endAdornment={
                 <InputAdornment position='end'>
                   <IconButton
-                    aria-label='password visibility'
+                    aria-label={showPasswordVerification ? 'Masquer la vérification du mot de passe' : 'Afficher la vérification du mot de passe'}
                     size='large'
                     onClick={handleClickShowPasswordVerifiation}
                     onMouseDown={handleMouseDownPasswordVerification}
diff --git a/components/session/sign.js b/components/session/sign.js
index 0dc4ba0..4193156 100644
--- a/components/session/sign.js
+++ b/components/session/sign.js
@@ -1,7 +1,7 @@
 'use client'
 
 import PropTypes from 'prop-types'
-import {useEffect, useState, useMemo} from 'react'
+import {useEffect, useState} from 'react'
 import {signOut} from 'next-auth/react'
 import {useRouter} from 'next/navigation'
 import Box from '@mui/material/Box'
@@ -70,7 +70,7 @@ export default function Sign({session, navButton}) {
               console.log('WebSocket authenticated successfully!')
 
               // Subscribe to version changes
-              ;(async () => {
+              const startSubscription = async () => {
                 const {subscription} = await client.subscribe('directus_versions', {
                   event: 'create',
                   query: {
@@ -86,7 +86,9 @@ export default function Sign({session, navButton}) {
                 for await (const item of subscription) {
                   console.log('New version created:', item)
                 }
-              })()
+              }
+
+              startSubscription().catch(error => console.error('Subscription error:', error))
             }
           })
 
@@ -117,12 +119,12 @@ export default function Sign({session, navButton}) {
         {session ? (
           <Stack direction='row' spacing={2}>
             <LightTooltip title='Se déconnecter' placement='right'>
-              <Fab size='large' color='error' onClick={() => setIsOpen(true)}>
+              <Fab size='large' color='error' aria-label='Se déconnecter' onClick={() => setIsOpen(true)}>
                 <LogoutIcon fontSize='large' />
               </Fab>
             </LightTooltip>
             <LightTooltip title={navButton.title} placement='right'>
-              <Fab sx={{mr: 3}} size='large' color={navButton.color} onClick={() => router.push(navButton.path)}>
+              <Fab sx={{mr: 3}} size='large' color={navButton.color} aria-label={navButton.title} onClick={() => router.push(navButton.path)}>
                 {navButton.icon}
               </Fab>
             </LightTooltip>
@@ -130,12 +132,12 @@ export default function Sign({session, navButton}) {
         ) : (
           <Stack direction='row' spacing={2}>
             <LightTooltip title='Se connecter' placement='left'>
-              <Fab size='large' color='success' onClick={() => router.push('/login')}>
+              <Fab size='large' color='success' aria-label='Se connecter' onClick={() => router.push('/login')}>
                 <LoginIcon fontSize='large' />
               </Fab>
             </LightTooltip>
-            <LightTooltip title='S’enregistrer' placement='right'>
-              <Fab size='large' color='success' onClick={() => router.push('/register')}>
+            <LightTooltip title="S'enregistrer" placement='right'>
+              <Fab size='large' color='success' aria-label="S'enregistrer" onClick={() => router.push('/register')}>
                 <PersonAddIcon fontSize='large' />
               </Fab>
             </LightTooltip>
diff --git a/components/versions/version-search.js b/components/versions/version-search.js
index 2af1224..e228958 100644
--- a/components/versions/version-search.js
+++ b/components/versions/version-search.js
@@ -34,6 +34,7 @@ export default function VersionSearch({onSearchChange, placeholder = 'Rechercher
         size='small'
         placeholder={placeholder}
         value={searchValue}
+        inputProps={{'aria-label': 'Rechercher dans les versions'}}
         InputProps={{
           startAdornment: (
             <InputAdornment position='start'>
diff --git a/components/versions/version-timeline.js b/components/versions/version-timeline.js
index 9cb16b3..f7f9f0d 100644
--- a/components/versions/version-timeline.js
+++ b/components/versions/version-timeline.js
@@ -100,7 +100,14 @@ function VersionItem({
       }}
     >
       {/* Status indicator */}
-      <Box sx={{display: 'flex', flexDirection: 'column', alignItems: 'center', pt: 0.5}}>
+      <Box
+        sx={{
+          display: 'flex',
+          flexDirection: 'column',
+          alignItems: 'center',
+          pt: 0.5
+        }}
+      >
         <Box
           sx={{
             width: 12,
@@ -151,17 +158,29 @@ function VersionItem({
           </Box>
 
           {/* Actions */}
-          <Box sx={{display: 'flex', alignItems: 'center', gap: 0.5, flexShrink: 0}}>
+          <Box
+            sx={{
+              display: 'flex',
+              alignItems: 'center',
+              gap: 0.5,
+              flexShrink: 0
+            }}
+          >
             <VoteButtons
               hasCountsVisible
               versionId={version.id}
               isDisabled={isVoteDisabled}
               onVoteResult={onVoteResult}
             />
-            <IconButton size='small' onClick={handleCompare} title='Comparer'>
+            <IconButton size='small' aria-label='Comparer les versions' title='Comparer' onClick={handleCompare}>
               <CompareArrowsIcon fontSize='small' />
             </IconButton>
-            <IconButton size='small' onClick={() => setExpanded(!expanded)}>
+            <IconButton
+              size='small'
+              aria-label={expanded ? 'Réduire les détails' : 'Afficher les détails'}
+              aria-expanded={expanded}
+              onClick={() => setExpanded(!expanded)}
+            >
               {expanded ? <ExpandLessIcon fontSize='small' /> : <ExpandMoreIcon fontSize='small' />}
             </IconButton>
           </Box>
@@ -169,7 +188,14 @@ function VersionItem({
 
         {/* Expanded content */}
         <Collapse in={expanded}>
-          <Box sx={{mt: 1.5, display: 'flex', flexDirection: 'column', gap: 1}}>
+          <Box
+            sx={{
+              mt: 1.5,
+              display: 'flex',
+              flexDirection: 'column',
+              gap: 1
+            }}
+          >
             {/* Preview */}
             {version.delta?.contenu && (
               <Typography
@@ -188,7 +214,14 @@ function VersionItem({
             )}
 
             {/* Actions row */}
-            <Box sx={{display: 'flex', alignItems: 'center', gap: 1, flexWrap: 'wrap'}}>
+            <Box
+              sx={{
+                display: 'flex',
+                alignItems: 'center',
+                gap: 1,
+                flexWrap: 'wrap'
+              }}
+            >
               <CopyButton
                 content={version.delta?.contenu || version.name || ''}
                 label='Copier'
diff --git a/tasks/todo.md b/tasks/todo.md
index 5ad32ca..4970560 100644
--- a/tasks/todo.md
+++ b/tasks/todo.md
@@ -21,7 +21,7 @@
 
 - [x] ISR page d'accueil (`revalidate`)
 - [x] Dockerisation frontend (`output: standalone`)
-- [ ] Audit accessibilité WCAG 2.1
+- [x] Audit accessibilité WCAG 2.1
 - [ ] Responsive mobile dashboard
 - [ ] Lazy loading jsPDF + md-editor
 - [ ] Migration NextAuth v5 stable