diff --git a/.github/workflows/dev-release.yml b/.github/workflows/dev-release.yml
index e011b9b6..00a643b5 100644
--- a/.github/workflows/dev-release.yml
+++ b/.github/workflows/dev-release.yml
@@ -56,11 +56,13 @@ jobs:
           NPM_TOKEN: ${{ secrets.NPM_TOKEN }}
           NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
         run: |
-          OUTPUT=$(bunx semantic-release 2>&1) || true
-          echo "$OUTPUT"
-          if echo "$OUTPUT" | grep -q "Published release"; then
+          # Use custom dev release script instead of semantic-release
+          # This ensures dev versions follow {stable}-dev.{N} pattern
+          chmod +x scripts/dev-release.sh
+          if ./scripts/dev-release.sh; then
             echo "released=true" >> $GITHUB_OUTPUT
           else
+            echo "Dev release failed or skipped"
             echo "released=false" >> $GITHUB_OUTPUT
           fi
 
diff --git a/scripts/dev-release.sh b/scripts/dev-release.sh
new file mode 100755
index 00000000..90b5334b
--- /dev/null
+++ b/scripts/dev-release.sh
@@ -0,0 +1,113 @@
+#!/bin/bash
+# Dev Release Script
+# Calculates version based on current stable, not semantic-release's predicted next version.
+# Pattern: {stable}-dev.{N} where N increments for each dev release.
+#
+# Example:
+#   main at v6.7.1 → dev releases: 6.7.1-dev.1, 6.7.1-dev.2, ...
+#   main releases v6.7.2 → dev releases: 6.7.2-dev.1, 6.7.2-dev.2, ...
+
+set -euo pipefail
+
+# Colors for output (respects NO_COLOR)
+if [[ -z "${NO_COLOR:-}" ]] && [[ -t 1 ]]; then
+  RED='\033[0;31m'
+  GREEN='\033[0;32m'
+  YELLOW='\033[1;33m'
+  NC='\033[0m'
+else
+  RED=''
+  GREEN=''
+  YELLOW=''
+  NC=''
+fi
+
+log_info() { echo -e "${GREEN}[i]${NC} $1"; }
+log_warn() { echo -e "${YELLOW}[!]${NC} $1"; }
+log_error() { echo -e "${RED}[X]${NC} $1"; }
+
+# Ensure we have the latest tags
+git fetch --tags origin main
+
+# Get latest stable tag from main (exclude prereleases like -dev, -beta, -rc)
+# Match only clean semver tags: vX.Y.Z
+STABLE_TAG=$(git tag -l "v[0-9]*.[0-9]*.[0-9]" --merged origin/main --sort=-v:refname | grep -E '^v[0-9]+\.[0-9]+\.[0-9]+$' | head -1 || echo "")
+
+if [ -z "$STABLE_TAG" ]; then
+  log_warn "No stable tags found on main, defaulting to v0.0.0"
+  STABLE_TAG="v0.0.0"
+fi
+
+STABLE=${STABLE_TAG#v}
+log_info "Current stable version: ${STABLE}"
+
+# Find latest dev tag for this stable version
+LATEST_DEV=$(git tag -l "v${STABLE}-dev.*" --sort=-v:refname | head -1 || echo "")
+
+# Calculate next dev number
+if [ -z "$LATEST_DEV" ]; then
+  DEV_NUM=1
+  log_info "No existing dev tags for ${STABLE}, starting at dev.1"
+else
+  DEV_NUM=$(echo "$LATEST_DEV" | sed 's/.*dev\.\([0-9]*\)/\1/')
+  DEV_NUM=$((DEV_NUM + 1))
+  log_info "Latest dev tag: ${LATEST_DEV}, incrementing to dev.${DEV_NUM}"
+fi
+
+VERSION="${STABLE}-dev.${DEV_NUM}"
+log_info "New version: ${VERSION}"
+
+# Check if tag already exists (safety check)
+if git rev-parse "v${VERSION}" >/dev/null 2>&1; then
+  log_error "Tag v${VERSION} already exists!"
+  exit 1
+fi
+
+# Update package.json
+npm version "$VERSION" --no-git-tag-version
+log_info "Updated package.json to ${VERSION}"
+
+# Configure git for GitHub Actions
+git config user.name "github-actions[bot]"
+git config user.email "github-actions[bot]@users.noreply.github.com"
+
+# Commit version change
+git add package.json
+git commit -m "chore(release): ${VERSION} [skip ci]"
+log_info "Created release commit"
+
+# Create tag
+git tag "v${VERSION}"
+log_info "Created tag v${VERSION}"
+
+# Push commit and tag
+git push origin dev
+git push origin "v${VERSION}"
+log_info "Pushed to origin"
+
+# Publish to npm with dev tag
+npm publish --tag dev
+log_info "Published to npm with @dev tag"
+
+# Generate release notes from commits since last tag
+PREV_TAG=$(git tag -l "v*" --sort=-v:refname | sed -n '2p' || echo "")
+if [ -n "$PREV_TAG" ]; then
+  # Get commits between previous tag and the one before our release commit
+  NOTES=$(git log --pretty=format:"- %s" "${PREV_TAG}..HEAD~1" 2>/dev/null | grep -v "chore(release):" | head -15 || echo "- Dev release")
+else
+  NOTES="- Dev release based on ${STABLE}"
+fi
+
+# Create GitHub prerelease
+gh release create "v${VERSION}" \
+  --title "v${VERSION}" \
+  --notes "${NOTES}" \
+  --prerelease
+
+log_info "Created GitHub prerelease"
+
+# Output for GitHub Actions
+echo "version=${VERSION}" >> "${GITHUB_OUTPUT:-/dev/null}"
+echo "released=true" >> "${GITHUB_OUTPUT:-/dev/null}"
+
+log_info "Dev release ${VERSION} complete!"