Download HeidiSQL v12.21, released on 03 Aug 2026
Installation notes
- Compatibility notes
- Windows:
- Microsoft Visual C++ Redistributable libraries are required for some drivers. Download and install them from Microsoft if you get errors saying "vcruntimeXYZ.dll missing".
- A preview of v13 can be downloaded here (updated on 2026-09-22 18:19). Unzip it in your existing HeidiSQL directory, and you can use both version in parallel.
- Linux:
- For the .deb and QT releases, Ubuntu 24.04 needs libqt6pas (not in the repos yet):
curl -L -o /tmp/libqt6pas6_6.2.10-1_amd64.deb https://github.com/davidbannon/libqt6pas/releases/download/v6.2.10/libqt6pas6_6.2.10-1_amd64.debsudo apt install /tmp/libqt6pas6_6.2.10-1_amd64.deb
- Install package:
- DEB:
sudo apt install ~/Downloads/heidisql...deb - RPM:
sudo yum install Downloads/heidisql...rpm
- DEB:
- Settings are stored in a .json file. You may migrate your settings from a Windows registry:
- click File > "Export settings" (to .txt file) in the Windows version
- click File > "Import settings" in the Linux version
- For the .deb and QT releases, Ubuntu 24.04 needs libqt6pas (not in the repos yet):
Latest changes and nightly builds
Latest automatically compiled main executable and installers for HeidiSQL. Just download and overwrite your existing C:\Program Files\HeidiSQL\heidisql.exe. Be aware that these builds are not official releases and therefore probably have more bugs, possibly serious ones.
| Classic Windows version | v13 Preview, Current Linux and macOS versions |
|---|---|
fix: invalid JSON export from empty grid resultCloses #2618 4c196b9: 01 Oct 2026 19:20 v12.21.0.735164bit build ≃ Installer ≃
fix: re-enable setting width of helpers box on query tabshttps://www.heidisql.com/forum.php?t=45368 bf0463b: 27 Sep 2026 15:32 v12.21.0.735064bit build ≃ Installer ≃
fix: default name for new constraint too long for MySQLRefs #2609 0fec887: 27 Sep 2026 15:01 v12.21.0.734964bit build ≃ Installer ≃
fix: (backport of c976d17e69d3e398f614926656da2fa7c0a82fd8) keep database nodes expanded on tree refresh, and hide table tabs after dropping the objectRemember expanded database and group nodes before resetting them in RefreshTree, and expand them again afterwards. Hide editor and data tab after the refresh if no table-like object is focused any more. Does not touch the FTreeRefreshInProgress timing, which broke saving tables in #2436. Take over the schema of a just created object, so it gets reselected in the tree on MS SQL and PostgreSQL. Closes #16 Closes #2431 c123ccd: 22 Sep 2026 18:08 v12.21.0.734864bit build ≃ Installer ≃
feat: Use fully qualified table name in "Select Top x rows" action when a click on it is combined with Shifthttps://www.heidisql.com/forum.php?t=45359 aa0f350: 10 Sep 2026 18:18 v12.21.0.734764bit build ≃ Installer ≃
fix: use newer/renumbered MYSQL_* constants with libmysql v8+Refs #2587 2508516: 27 Aug 2026 19:26 v12.21.0.734664bit build ≃ Installer ≃
enhance: rephrase warning message displayed when a grid edit/delete did not affect any rowRefs #2568 ca238aa: 07 Aug 2026 08:32 v12.21.0.7345
Bump version for v12.21 release
effb854: 03 Aug 2026 19:12 v12.21.0.734464bit build ≃ Installer ≃
chore: update SQLite libraries to v3.53.4
05c57aa: 03 Aug 2026 13:37 v12.20.0.7343
fix: sporadic crash in DBtreePaintText with columnsAlso, do not init column nodes in FindDBObjectNode, after dblclick on a table in ListTables Refs #2069 59ea39a: 03 Aug 2026 08:24 v12.20.0.734264bit build ≃ Installer ≃
fix: enable foreign key drop down on grid field in MS SQL modeRefs #2567 cbdc78d: 03 Aug 2026 08:21 v12.20.0.7341
fix: remove column nodes from tree in table tools dialogRefs #2563 and #2069 57905b0: 28 Jul 2026 19:02 v12.20.0.734064bit build ≃ Installer ≃
feat: create opt-in option for displaying columns in database treeRefs #2069 bb5e724: 27 Jul 2026 19:59 v12.20.0.733964bit build ≃ Installer ≃
fix: invalid folder path for SQL export cannot be created if it contains a duplicated path delimiterCustom output dir may already have a trailing path delimiter, only add when not Broken in 2e290f1be155e09ef4edb50df9ed05a772f50c5c Refs #2558 152ab70: 22 Jul 2026 09:10 v12.20.0.733764bit build ≃ Installer ≃
fix: various CVEs regarding libssl and libcryptoRelated to a bunch of critical and high rated security issues: High CVE-2026-28388 High CVE-2026-28389 High CVE-2026-28390 High CVE-2026-31790 High CVE-2026-45447 Critical CVE-2025-15467 Critical CVE-2026-28387 Critical CVE-2026-31789 9917a4c: 20 Jul 2026 15:34 v12.20.0.733664bit build ≃ Installer ≃
fix: crash when opening textfile import dialog, with 0 tables in databaseRefs #2556 03c005a: 20 Jul 2026 13:59 v12.20.0.7335
feat: show table columns in tree, as child nodesRefs #2069 fc222fb: 17 Jul 2026 14:39 v12.20.0.733464bit build ≃ Installer ≃ |
Lucas Daniel Alberti:
fix: splitter between query editor and results not draggable on macOS On Cocoa, the native NSTabView frame of a TTabControl extends a few pixels above its LCL bounds (TCocoaTabControl.lclGetFrameToLayoutDelta: 6px in Lazarus 4.4, 5px in 4.8). tabsetQuery sits right below the 5px high spltQuery, so it covered the splitter and swallowed its mouse events. Add a top border spacing to tabsetQuery on macOS, also for query tabs created later. Closes #2620 Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Ansgar Becker:
fix: invalid JSON export from empty grid result Refs #2618 f1a1904: 01 Oct 2026 19:18
Vibe Nuage Agent:
chore: upgrade actions to Node.js 24 versions (checkout v6, upload-artifact v6, download-artifact v7, gh-release v3) Co-authored-by: ansgarbecker <ansgarbecker@users.noreply.github.com> 7ea9f11: 28 Sep 2026 19:46
Vibe Nuage Agent:
fix: remove invalid -s flag from security set-key-partition-list Co-authored-by: ansgarbecker <ansgarbecker@users.noreply.github.com> 1910c5c: 28 Sep 2026 17:20
Vibe Nuage Agent:
fix: correct argument order for security set-keychain-settings Co-authored-by: ansgarbecker <ansgarbecker@users.noreply.github.com> 1e108ce: 28 Sep 2026 17:14
Vibe Nuage Agent:
fix: use plain string for codesign flags instead of empty array (set -u unbound variable) Co-authored-by: ansgarbecker <ansgarbecker@users.noreply.github.com> 9e777d7: 27 Sep 2026 19:37
Vibe Nuage Agent:
fix: move secrets check from step if: into script (secrets context not allowed in if:) Co-authored-by: ansgarbecker <ansgarbecker@users.noreply.github.com> 072bbb0: 27 Sep 2026 19:34
Vibe Nuage Agent:
feat: build, sign and notarize macOS app bundle in CI - new build-macos-app job: Lazarus 4.8 install, make build-macos, create-macos-app.sh bundle/sign/notarize, artifact upload - with MACOS_CODESIGN_IDENTITY + APPLE_NOTARY secrets: full Developer ID signing and notarization; without: ad-hoc signed fallback bundle - signing cert imported into ephemeral keychain, cleaned up after run - release job attaches the bundle as HeidiSQL-macos-<tag>.zip - create-macos-app.sh: env-overridable identity/team/notary profile, --adhoc flag, executable auto-detection (out/ vs out/macos/), tolerant openssl@1.1 install Co-authored-by: ansgarbecker <ansgarbecker@users.noreply.github.com> cae4e0c: 27 Sep 2026 19:26
Vibe Nuage Agent:
fix: use curl -L with /download suffix for SourceForge installer download on Windows Co-authored-by: ansgarbecker <ansgarbecker@users.noreply.github.com> 2ad4009: 27 Sep 2026 18:58
Vibe Nuage Agent:
feat: install Lazarus 4.8 on Windows and macOS runners, drop setup-lazarus action Co-authored-by: ansgarbecker <ansgarbecker@users.noreply.github.com> 46ea9be: 27 Sep 2026 18:55
Vibe Nuage Agent:
fix: run apt-get update before installing Lazarus debs on Ubuntu Co-authored-by: ansgarbecker <ansgarbecker@users.noreply.github.com> 35e24e8: 27 Sep 2026 18:25
Ansgar Becker:
fix: re-enable setting width of helpers box on query tabs https://www.heidisql.com/forum.php?t=45368 f17d084: 27 Sep 2026 15:32
Ansgar Becker:
fix: default name for new constraint too long for MySQL Refs #2609 91ba1d4: 27 Sep 2026 14:58
Ansgar Becker:
Issue #2607: make error dialog due to wrong WHERE clause show up asynchronously
fe64c56: 27 Sep 2026 14:05
FingerlessGloves:
fix: range check error when starting SSH tunnel TProcess.ExitStatus is a signed Integer, so don't store it in a LongWord. a834721: 18 Sep 2026 20:56
FingerlessGloves:
fix: keep database nodes expanded on tree refresh, and hide table tabs after dropping the object Remember expanded database and group nodes before resetting them in RefreshTree, and expand them again afterwards. Hide editor and data tab after the refresh if no table-like object is focused any more. Does not touch the FTreeRefreshInProgress timing, which broke saving tables in #2436. Take over the schema of a just created object, so it gets reselected in the tree on MS SQL and PostgreSQL. Closes #16 Closes #2431 c976d17: 18 Sep 2026 20:40
Ansgar Becker:
fix: stuck UI after firing query with SQL error on MS SQL Refs #2601 905eb8f: 17 Sep 2026 17:59
Ansgar Becker:
fix: access violation on MS SQL connections, after applying filter on data tab Refs #2599 9a209eb: 16 Sep 2026 16:53
Ansgar Becker:
fix: make some cancel buttons react on Esc key https://www.heidisql.com/forum.php?t=45320 070ea3c: 12 Sep 2026 15:45
Ansgar Becker:
feat: Use fully qualified table name in "Select Top x rows" action when a click on it is combined with Shift https://www.heidisql.com/forum.php?t=45359 06ab070: 10 Sep 2026 18:11 |