diff --git a/docs/plugins.md b/docs/plugins.md
index 99cf342cf..4eb9eed91 100644
--- a/docs/plugins.md
+++ b/docs/plugins.md
@@ -479,6 +479,7 @@ See also plugins in modular minifier [`cssnano`].
 * [`postcss-spiffing`] lets you use British English in your CSS.
 * [`postcss-spanish-stylesheets`] Spanish Style Sheets.
 * [`postcss-nope`] lets you write `nope` instead of `none`.
+* [`postcss-glitch`] add glitch effect to your text.
 
 [`postcss-letter-tracking`]:              https://github.com/letsjaam/postcss-letter-tracking
 [`postcss-combine-duplicated-selectors`]: https://github.com/ChristianMurphy/postcss-combine-duplicated-selectors
@@ -783,3 +784,4 @@ See also plugins in modular minifier [`cssnano`].
 [`postcss-subgrid`]:                      https://github.com/seaneking/postcss-subgrid
 [`postcss-join-transitions`]:             https://github.com/JGJP/postcss-join-transitions
 [`postcss-font-display`]:                 https://github.com/dkrnl/postcss-font-display
+[`postcss-glitch`]:                       https://github.com/crftd/postcss-glitch
diff --git a/package.json b/package.json
index 53678e8e3..72a96090a 100644
--- a/package.json
+++ b/package.json
@@ -22,7 +22,7 @@
   "repository": "postcss/postcss",
   "dependencies": {
     "chalk": "^2.4.1",
-    "source-map": "^0.6.1",
+    "source-map": "^0.7.4",
     "supports-color": "^5.4.0"
   },
   "devDependencies": {
diff --git a/yarn.lock b/yarn.lock
index e6eadd6eb..6ab13e168 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -6599,6 +6599,11 @@ source-map@^0.6.0, source-map@^0.6.1, source-map@~0.6.0, source-map@~0.6.1:
   version "0.6.1"
   resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.6.1.tgz#74722af32e9614e9c287a8d0bbde48b5e2f1a263"
 
+source-map@^0.7.4:
+  version "0.7.4"
+  resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.7.4.tgz#a9bbe705c9d8846f4e08ff6765acf0f1b0898656"
+  integrity sha512-l3BikUxvPOcn5E74dZiq5BGsTb5yEwhaTSzccU6t4sDOH8NWJCstKO5QT2CvtFoK6F0saL7p9xHAqHOlCPJygA==
+
 sparkles@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/sparkles/-/sparkles-1.0.0.tgz#1acbbfb592436d10bbe8f785b7cc6f82815012c3"