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Upgrade default Bun to 1.4.4 #7639

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Merged
FarhanAliRaza merged 4 commits into from
Oct 22, 2026
Merged

Upgrade default Bun to 1.4.4 #7639

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023b23c
Upgrade default Bun to 1.4.4
Darksinian Oct 22, 2026
caa122f
Require Bun 1.4.4 for managed runtime upgrades
Darksinian Oct 22, 2026
448372b
Clarify the unsupported Bun version warning
Darksinian Oct 22, 2026
395d832
Add changelog fragment for Bun version warning
Darksinian Oct 22, 2026
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1 change: 1 addition & 0 deletions news/+bun-version-warning.bugfix.md
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Original file line number Diff line number Diff line change
@@ -0,0 +1 @@
Clarify the warning shown when Bun is below the minimum supported version.
1 change: 1 addition & 0 deletions packages/reflex-base/news/+bun-ca-removal.bugfix.md
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@@ -0,0 +1 @@
Upgrade the default Bun version to 1.4.4, which removes compromised emSign certificate authorities from its bundled trust store.
4 changes: 2 additions & 2 deletions packages/reflex-base/src/reflex_base/constants/installer.py
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Expand Up @@ -17,15 +17,15 @@ class Bun(SimpleNamespace):
"""Bun constants."""

# The Bun version.
VERSION = "1.4.2"
VERSION = "1.4.4"
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# Min Bun Version. Bun 1.4 creates new lockfiles at `lockfileVersion: 2`,
# which 1.3.x cannot parse at all, so a `reflex.lock/bun.lock` generated
# under 1.4 is unusable on 1.3.x. (An existing v1 lockfile is kept at v1
# even across dependency changes, so already-initialized projects survive.)
# Keep this in step with VERSION across the 1.4 boundary so a system bun
# old enough to choke on a v2 lockfile is never preferred over the pinned one.
MIN_VERSION = "1.4.0"
MIN_VERSION = "1.4.4"
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# URL to bun install script.
INSTALL_URL = "https://raw.githubusercontent.com/reflex-dev/reflex/main/scripts/bun_install.sh"
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8 changes: 2 additions & 6 deletions reflex/utils/js_runtimes.py
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Expand Up @@ -363,12 +363,8 @@ def validate_bun(bun_path: Path | None = None):
raise SystemExit(1)
if bun_version < version.parse(constants.Bun.MIN_VERSION):
logger.warning(
f"Reflex requires bun version {constants.Bun.MIN_VERSION} or higher to run, but the detected version is "
f"{bun_version}. If you have specified a custom bun path in your config, make sure to provide one "
f"that satisfies the minimum version requirement. You can upgrade bun by running [bold]bun upgrade[/bold]. "
f"Bun 1.4 creates new lockfiles at `lockfileVersion: 2`, which bun 1.3.x cannot parse, so a "
f"[bold]reflex.lock/bun.lock[/bold] generated by bun 1.4 will fail to install with this bun. "
f"An existing v1 lockfile is kept at v1, so already-initialized projects are unaffected.",
f"Bun {bun_version} is below the minimum supported version "
f"{constants.Bun.MIN_VERSION}. Please upgrade Bun by running [bold]bun upgrade[/bold].",
extra={"rich": True},
)

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