diff --git a/.github/workflows/lint-commit-messages.yaml b/.github/workflows/lint-commit-messages.yaml
index 91fdda71..ce8799c4 100644
--- a/.github/workflows/lint-commit-messages.yaml
+++ b/.github/workflows/lint-commit-messages.yaml
@@ -28,7 +28,7 @@ on:
 
 env:
   # renovate: datasource=npm depName=bun
-  BUN_VERSION: "1.3.14"
+  BUN_VERSION: "1.4.0"
   # renovate: datasource=node-version
   NODE_VERSION: "24.11.1"
 
diff --git a/.github/workflows/lint-markdown.yaml b/.github/workflows/lint-markdown.yaml
index 5821a859..b210c335 100644
--- a/.github/workflows/lint-markdown.yaml
+++ b/.github/workflows/lint-markdown.yaml
@@ -23,7 +23,7 @@ on:
 
 env:
   # renovate: datasource=npm depName=bun
-  BUN_VERSION: "1.3.14"
+  BUN_VERSION: "1.4.0"
   # renovate: datasource=github-releases depName=DavidAnson/markdownlint-cli2
   MARKDOWNLINT_CLIV2_VERSION: "v0.18.1"
   # renovate: datasource=node-version
diff --git a/.github/workflows/lint-renovate-config-check.yaml b/.github/workflows/lint-renovate-config-check.yaml
index 0194f364..94201f9e 100644
--- a/.github/workflows/lint-renovate-config-check.yaml
+++ b/.github/workflows/lint-renovate-config-check.yaml
@@ -23,7 +23,7 @@ on:
 
 env:
   # renovate: datasource=npm depName=bun
-  BUN_VERSION: "1.3.14"
+  BUN_VERSION: "1.4.0"
   # renovate: datasource=node-version
   NODE_VERSION: "24.11.1"
   # renovate: datasource=github-releases depName=renovatebot/renovate
diff --git a/.github/workflows/release-semantic.yaml b/.github/workflows/release-semantic.yaml
index 4199aebe..be8e7586 100644
--- a/.github/workflows/release-semantic.yaml
+++ b/.github/workflows/release-semantic.yaml
@@ -35,7 +35,7 @@ on:
 
 env:
   # renovate: datasource=npm depName=bun
-  BUN_VERSION: "1.3.14"
+  BUN_VERSION: "1.4.0"
   # renovate: datasource=node-version
   NODE_VERSION: "24.11.1"