diff --git a/backend/internal/features/storages/models/s3/model.go b/backend/internal/features/storages/models/s3/model.go
index 9201d00..b61f98f 100644
--- a/backend/internal/features/storages/models/s3/model.go
+++ b/backend/internal/features/storages/models/s3/model.go
@@ -3,6 +3,7 @@ package s3_storage
 import (
 	"bytes"
 	"context"
+	"crypto/tls"
 	"errors"
 	"fmt"
 	"io"
@@ -40,6 +41,7 @@ type S3Storage struct {
 
 	S3Prefix                string `json:"s3Prefix"                gorm:"type:text;column:s3_prefix"`
 	S3UseVirtualHostedStyle bool   `json:"s3UseVirtualHostedStyle" gorm:"default:false;column:s3_use_virtual_hosted_style"`
+	SkipTLSVerify           bool   `json:"skipTLSVerify"           gorm:"default:false;column:skip_tls_verify"`
 }
 
 func (s *S3Storage) TableName() string {
@@ -331,6 +333,7 @@ func (s *S3Storage) Update(incoming *S3Storage) {
 	s.S3Region = incoming.S3Region
 	s.S3Endpoint = incoming.S3Endpoint
 	s.S3UseVirtualHostedStyle = incoming.S3UseVirtualHostedStyle
+	s.SkipTLSVerify = incoming.SkipTLSVerify
 
 	if incoming.S3AccessKey != "" {
 		s.S3AccessKey = incoming.S3AccessKey
@@ -442,6 +445,9 @@ func (s *S3Storage) getClientParams(
 		TLSHandshakeTimeout:   s3TLSHandshakeTimeout,
 		ResponseHeaderTimeout: s3ResponseTimeout,
 		IdleConnTimeout:       s3IdleConnTimeout,
+		TLSClientConfig: &tls.Config{
+			InsecureSkipVerify: s.SkipTLSVerify,
+		},
 	}
 
 	return endpoint, useSSL, accessKey, secretKey, bucketLookup, transport, nil
diff --git a/backend/migrations/20251211164424_add_skip_tls_verify_to_s3.sql b/backend/migrations/20251211164424_add_skip_tls_verify_to_s3.sql
new file mode 100644
index 0000000..d9276de
--- /dev/null
+++ b/backend/migrations/20251211164424_add_skip_tls_verify_to_s3.sql
@@ -0,0 +1,11 @@
+-- +goose Up
+-- +goose StatementBegin
+ALTER TABLE s3_storages
+    ADD COLUMN skip_tls_verify BOOLEAN NOT NULL DEFAULT FALSE;
+-- +goose StatementEnd
+
+-- +goose Down
+-- +goose StatementBegin
+ALTER TABLE s3_storages
+    DROP COLUMN skip_tls_verify;
+-- +goose StatementEnd
diff --git a/frontend/src/entity/storages/models/S3Storage.ts b/frontend/src/entity/storages/models/S3Storage.ts
index 40c741b..88c0905 100644
--- a/frontend/src/entity/storages/models/S3Storage.ts
+++ b/frontend/src/entity/storages/models/S3Storage.ts
@@ -6,4 +6,5 @@ export interface S3Storage {
   s3Endpoint?: string;
   s3Prefix?: string;
   s3UseVirtualHostedStyle?: boolean;
+  skipTLSVerify?: boolean;
 }
diff --git a/frontend/src/features/storages/ui/edit/EditStorageComponent.tsx b/frontend/src/features/storages/ui/edit/EditStorageComponent.tsx
index a20679a..f78375d 100644
--- a/frontend/src/features/storages/ui/edit/EditStorageComponent.tsx
+++ b/frontend/src/features/storages/ui/edit/EditStorageComponent.tsx
@@ -39,6 +39,7 @@ export function EditStorageComponent({
 
   const [isTestingConnection, setIsTestingConnection] = useState(false);
   const [isTestConnectionSuccess, setIsTestConnectionSuccess] = useState(false);
+  const [connectionError, setConnectionError] = useState<string | undefined>();
 
   const save = async () => {
     if (!storage) return;
@@ -60,6 +61,7 @@ export function EditStorageComponent({
     if (!storage) return;
 
     setIsTestingConnection(true);
+    setConnectionError(undefined);
 
     try {
       await storageApi.testStorageConnectionDirect(storage);
@@ -69,7 +71,9 @@ export function EditStorageComponent({
         description: 'Storage connection tested successfully',
       });
     } catch (e) {
-      alert((e as Error).message);
+      const errorMessage = (e as Error).message;
+      setConnectionError(errorMessage);
+      alert(errorMessage);
     }
 
     setIsTestingConnection(false);
@@ -290,7 +294,9 @@ export function EditStorageComponent({
             setUnsaved={() => {
               setIsUnsaved(true);
               setIsTestConnectionSuccess(false);
+              setConnectionError(undefined);
             }}
+            connectionError={connectionError}
           />
         )}
 
diff --git a/frontend/src/features/storages/ui/edit/storages/EditS3StorageComponent.tsx b/frontend/src/features/storages/ui/edit/storages/EditS3StorageComponent.tsx
index 79436ab..2d12701 100644
--- a/frontend/src/features/storages/ui/edit/storages/EditS3StorageComponent.tsx
+++ b/frontend/src/features/storages/ui/edit/storages/EditS3StorageComponent.tsx
@@ -1,6 +1,6 @@
 import { DownOutlined, InfoCircleOutlined, UpOutlined } from '@ant-design/icons';
 import { Checkbox, Input, Tooltip } from 'antd';
-import { useState } from 'react';
+import { useEffect, useState } from 'react';
 
 import type { Storage } from '../../../../../entity/storages';
 
@@ -8,13 +8,27 @@ interface Props {
   storage: Storage;
   setStorage: (storage: Storage) => void;
   setUnsaved: () => void;
+  connectionError?: string;
 }
 
-export function EditS3StorageComponent({ storage, setStorage, setUnsaved }: Props) {
+export function EditS3StorageComponent({
+  storage,
+  setStorage,
+  setUnsaved,
+  connectionError,
+}: Props) {
   const hasAdvancedValues =
-    !!storage?.s3Storage?.s3Prefix || !!storage?.s3Storage?.s3UseVirtualHostedStyle;
+    !!storage?.s3Storage?.s3Prefix ||
+    !!storage?.s3Storage?.s3UseVirtualHostedStyle ||
+    !!storage?.s3Storage?.skipTLSVerify;
   const [showAdvanced, setShowAdvanced] = useState(hasAdvancedValues);
 
+  useEffect(() => {
+    if (connectionError?.includes('failed to verify certificate')) {
+      setShowAdvanced(true);
+    }
+  }, [connectionError]);
+
   return (
     <>
       <div className="mb-2 flex items-center">
@@ -226,6 +240,36 @@ export function EditS3StorageComponent({ storage, setStorage, setUnsaved }: Prop
               </Tooltip>
             </div>
           </div>
+
+          <div className="mb-1 flex w-full flex-col items-start sm:flex-row sm:items-center">
+            <div className="mb-1 min-w-[110px] sm:mb-0">Skip TLS verify</div>
+            <div className="flex items-center">
+              <Checkbox
+                checked={storage?.s3Storage?.skipTLSVerify || false}
+                onChange={(e) => {
+                  if (!storage?.s3Storage) return;
+
+                  setStorage({
+                    ...storage,
+                    s3Storage: {
+                      ...storage.s3Storage,
+                      skipTLSVerify: e.target.checked,
+                    },
+                  });
+                  setUnsaved();
+                }}
+              >
+                Skip TLS
+              </Checkbox>
+
+              <Tooltip
+                className="cursor-pointer"
+                title="Skip TLS certificate verification. Enable this if your S3-compatible storage uses a self-signed certificate. Warning: this reduces security."
+              >
+                <InfoCircleOutlined className="ml-2" style={{ color: 'gray' }} />
+              </Tooltip>
+            </div>
+          </div>
         </>
       )}
 
diff --git a/frontend/src/features/storages/ui/show/storages/ShowS3StorageComponent.tsx b/frontend/src/features/storages/ui/show/storages/ShowS3StorageComponent.tsx
index 4eb8fdb..d833e3a 100644
--- a/frontend/src/features/storages/ui/show/storages/ShowS3StorageComponent.tsx
+++ b/frontend/src/features/storages/ui/show/storages/ShowS3StorageComponent.tsx
@@ -45,6 +45,13 @@ export function ShowS3StorageComponent({ storage }: Props) {
           Enabled
         </div>
       )}
+
+      {storage?.s3Storage?.skipTLSVerify && (
+        <div className="mb-1 flex items-center">
+          <div className="min-w-[110px]">Skip TLS</div>
+          Enabled
+        </div>
+      )}
     </>
   );
 }