diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 5f7f347..9a7def7 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -43,12 +43,13 @@ The empty lines between the different parts are required.
 | **perf** | Performance optimizations | patch |
 | **refactor** | Changes to the code structure without fixing bugs or adding features | patch |
 | **chore** | Changes to the project setup and tools, dependency bumps, house-keeping | patch |
+| **build** | Changes that affect the build system (e.g webpack, rollup, ...) | patch |
 | **revert** | reverts a previous commit | patch |
-
 ||
 | **docs** | Changes to the documentation | none |
 | **style** | Cleanup & lint rule fixes. Note that often it's better to just amend the previous commit if it introduced lint errors | none |
 | **test** | Fixing existing tests or adding missing ones. Just like with **style**, if you add tests to a feature you just introduced in the previous commit, consider keeping the tests, and the feature in the same commit instead. | none |
+| **ci** | Changes to your CI configuration & scripts | none |
 * `<subject>`: A [good git commit message subject](http://chris.beams.io/posts/git-commit/#limit-50).
   - Keep it brief. If possible the whole first line should have at most 50 characters.
   - Use an imperative mood. "Create" instead of "creates" or "created".
diff --git a/lib/steps/release-info.js b/lib/steps/release-info.js
index 01682e5..59619ec 100644
--- a/lib/steps/release-info.js
+++ b/lib/steps/release-info.js
@@ -97,6 +97,7 @@ function determineReleaseInfo(commits, acceptInvalidCommits) {
       case 'fix':
       case 'refactor':
       case 'perf':
+      case 'build':
       case 'revert':
         releaseType = Math.max(releaseType, 1);
         break;
@@ -108,6 +109,7 @@ function determineReleaseInfo(commits, acceptInvalidCommits) {
       case 'docs':
       case 'style':
       case 'test':
+      case 'ci':
       case 'pr':
         continue;
 
diff --git a/test/fixtures/patch-commits b/test/fixtures/patch-commits
index 60d681d..d3400db 100755
--- a/test/fixtures/patch-commits
+++ b/test/fixtures/patch-commits
@@ -15,3 +15,7 @@ git commit -m "chore: Adding refactor commit"
 echo "console.log('more');" > perf.js
 git add perf.js
 git commit -m "chore: Adding perf commit"
+
+echo "console.log('more');" > build.js
+git add build.js
+git commit -m "build: Adding perf commit"
diff --git a/test/fixtures/silent-commits b/test/fixtures/silent-commits
index 40202b9..a0f52e7 100755
--- a/test/fixtures/silent-commits
+++ b/test/fixtures/silent-commits
@@ -16,6 +16,10 @@ echo "console.log('more');" > test.js
 git add test.js
 git commit -m "test: Adding test commit"
 
+echo "console.log('more');" > ci.js
+git add ci.js
+git commit -m "ci: Adding ci commit"
+
 echo "console.log('more');" > pr.js
 git add pr.js
 git commit -m "pr: Adding pr commit"
diff --git a/test/steps/release-info.test.js b/test/steps/release-info.test.js
index 31dad2c..1c7ca92 100644
--- a/test/steps/release-info.test.js
+++ b/test/steps/release-info.test.js
@@ -90,7 +90,7 @@ git rebase -i --root
 
   const testcases = [
     {
-      desc: 'with "chore", "fix", "refactor" & "perf" commit type',
+      desc: 'with "chore", "fix", "refactor", "build" & "perf" commit type',
       fixture: 'patch-commits',
       expected: 'patch',
     },
@@ -100,7 +100,7 @@ git rebase -i --root
       expected: 'minor',
     },
     {
-      desc: 'with "docs", "style", "test" & "pr" commit type',
+      desc: 'with "docs", "style", "test", "ci" & "pr" commit type',
       fixture: 'silent-commits',
       expected: 'none',
     },