diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 22b057a..0d89866 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -248,15 +248,17 @@ jobs:
       - name: Determine next version
         id: version
         run: |
-          NEXT=$(scripts/next-version.sh)
-          LEVEL=$(scripts/next-version.sh --level-only)
+          # Invoked through bash rather than relying on the executable bit, which is easy to lose on a
+          # checkout from a Windows working tree.
+          NEXT=$(bash scripts/next-version.sh)
+          LEVEL=$(bash scripts/next-version.sh --level-only)
           echo "next=$NEXT" >> "$GITHUB_OUTPUT"
           echo "Bumping $LEVEL to $NEXT"
 
       - name: Apply version and changelog
         run: |
           sed -i "s|^pluginVersion *=.*|pluginVersion = ${{ steps.version.outputs.next }}|" gradle.properties
-          scripts/prepare-changelog.sh
+          bash scripts/prepare-changelog.sh
           ./gradlew patchChangelog
 
       # [skip ci] keeps this push from re-triggering the workflow
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 244379a..80bff79 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,7 +2,12 @@
 
 # eGovConstant Changelog
 
-## [2.0.0]
+<!--
+  Notes for the next release go under [Unreleased]. The release job in .github/workflows/build.yml runs
+  patchChangelog, which renames this heading to the version it computed - so writing the version here by
+  hand would produce two sections with the same number.
+-->
+## [Unreleased]
 ### Added
 - 영어/한글 UI 동시 지원. IDE 언어 설정을 따르며, 기존에 하드코딩돼 있던 문자열 40여 개를 리소스 번들로 분리.
 - 한글 초성 검색. `ㅅㅇㅈ` 로 `사용자`, `승인자`, `사업장` 등을 찾을 수 있습니다.
diff --git a/gradle.properties b/gradle.properties
index 7dc4776..b3fe4f3 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -4,7 +4,7 @@ pluginGroup = com.github.yohanki.egovconstant
 pluginName = eGovConstant
 pluginRepositoryUrl = https://github.com/YoHanKi/eGovConstant
 # SemVer format -> https://semver.org
-pluginVersion = 2.0.0
+pluginVersion = 1.6.4
 
 # Supported build number ranges and IntelliJ Platform versions -> https://plugins.jetbrains.com/docs/intellij/build-number-ranges.html
 pluginSinceBuild = 243
diff --git a/scripts/next-version.sh b/scripts/next-version.sh
old mode 100644
new mode 100755
diff --git a/scripts/prepare-changelog.sh b/scripts/prepare-changelog.sh
old mode 100644
new mode 100755