diff --git a/packages/gatsby-plugin-image/package.json b/packages/gatsby-plugin-image/package.json
index 067ee8b98cf1a..69f3f4b4e9cae 100644
--- a/packages/gatsby-plugin-image/package.json
+++ b/packages/gatsby-plugin-image/package.json
@@ -59,7 +59,7 @@
     "do-sync": "^3.1.1",
     "microbundle": "^0.15.1",
     "npm-run-all": "^4.1.5",
-    "postcss": "^8.4.21",
+    "postcss": "^8.5.6",
     "prepend-directive": "^1.1.0",
     "semver": "^7.5.3",
     "terser": "^5.16.8",
diff --git a/packages/gatsby/package.json b/packages/gatsby/package.json
index c68db3ac3ebb9..f14703b5c7e14 100644
--- a/packages/gatsby/package.json
+++ b/packages/gatsby/package.json
@@ -139,7 +139,7 @@
     "path-to-regexp": "0.1.12",
     "physical-cpu-count": "^2.0.0",
     "platform": "^1.3.6",
-    "postcss": "^8.4.24",
+    "postcss": "^8.5.6",
     "postcss-flexbugs-fixes": "^5.0.2",
     "postcss-loader": "^5.3.0",
     "prompts": "^2.4.2",
diff --git a/yarn.lock b/yarn.lock
index 4973b6f36e248..27e28574fe3f0 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -215,6 +215,15 @@
   dependencies:
     "@babel/highlight" "^7.18.6"
 
+"@babel/code-frame@^7.27.1":
+  version "7.27.1"
+  resolved "https://registry.yarnpkg.com/@babel/code-frame/-/code-frame-7.27.1.tgz#200f715e66d52a23b221a9435534a91cc13ad5be"
+  integrity sha512-cjQ7ZlQ0Mv3b47hABuTevyTuYN4i+loJKGeV9flcCgIK37cCXRh+L1bd3iBHlynerhQ7BhCkn2BPbQUL+rGqFg==
+  dependencies:
+    "@babel/helper-validator-identifier" "^7.27.1"
+    js-tokens "^4.0.0"
+    picocolors "^1.1.1"
+
 "@babel/compat-data@^7.17.7", "@babel/compat-data@^7.20.1", "@babel/compat-data@^7.20.5":
   version "7.20.10"
   resolved "https://registry.yarnpkg.com/@babel/compat-data/-/compat-data-7.20.10.tgz#9d92fa81b87542fff50e848ed585b4212c1d34ec"
@@ -319,6 +328,17 @@
     "@jridgewell/gen-mapping" "^0.3.2"
     jsesc "^2.5.1"
 
+"@babel/generator@^7.27.3":
+  version "7.27.5"
+  resolved "https://registry.yarnpkg.com/@babel/generator/-/generator-7.27.5.tgz#3eb01866b345ba261b04911020cbe22dd4be8c8c"
+  integrity sha512-ZGhA37l0e/g2s1Cnzdix0O3aLYm66eF8aufiVteOgnwxgnRP8GoyMj7VWsgWnQbVKXyge7hqrFh2K2TQM6t1Hw==
+  dependencies:
+    "@babel/parser" "^7.27.5"
+    "@babel/types" "^7.27.3"
+    "@jridgewell/gen-mapping" "^0.3.5"
+    "@jridgewell/trace-mapping" "^0.3.25"
+    jsesc "^3.0.2"
+
 "@babel/helper-annotate-as-pure@^7.18.6":
   version "7.18.6"
   resolved "https://registry.yarnpkg.com/@babel/helper-annotate-as-pure/-/helper-annotate-as-pure-7.18.6.tgz#eaa49f6f80d5a33f9a5dd2276e6d6e451be0a6bb"
@@ -434,6 +454,14 @@
   dependencies:
     "@babel/types" "^7.18.6"
 
+"@babel/helper-module-imports@^7.27.1":
+  version "7.27.1"
+  resolved "https://registry.yarnpkg.com/@babel/helper-module-imports/-/helper-module-imports-7.27.1.tgz#7ef769a323e2655e126673bb6d2d6913bbead204"
+  integrity sha512-0gSFWUPNXNopqtIPQvlD5WgXYI5GY2kP2cCvoT8kczjbfcfuIljTbcWrulD1CIPIX2gt1wghbDy08yE1p+/r3w==
+  dependencies:
+    "@babel/traverse" "^7.27.1"
+    "@babel/types" "^7.27.1"
+
 "@babel/helper-module-transforms@^7.12.1", "@babel/helper-module-transforms@^7.18.6", "@babel/helper-module-transforms@^7.20.11":
   version "7.20.11"
   resolved "https://registry.yarnpkg.com/@babel/helper-module-transforms/-/helper-module-transforms-7.20.11.tgz#df4c7af713c557938c50ea3ad0117a7944b2f1b0"
@@ -448,6 +476,15 @@
     "@babel/traverse" "^7.20.10"
     "@babel/types" "^7.20.7"
 
+"@babel/helper-module-transforms@^7.27.1":
+  version "7.27.3"
+  resolved "https://registry.yarnpkg.com/@babel/helper-module-transforms/-/helper-module-transforms-7.27.3.tgz#db0bbcfba5802f9ef7870705a7ef8788508ede02"
+  integrity sha512-dSOvYwvyLsWBeIRyOeHXp5vPj5l1I011r52FM1+r1jCERv+aFXYk4whgQccYEGYxK2H3ZAIA8nuPkQ0HaUo3qg==
+  dependencies:
+    "@babel/helper-module-imports" "^7.27.1"
+    "@babel/helper-validator-identifier" "^7.27.1"
+    "@babel/traverse" "^7.27.3"
+
 "@babel/helper-optimise-call-expression@^7.18.6":
   version "7.18.6"
   resolved "https://registry.yarnpkg.com/@babel/helper-optimise-call-expression/-/helper-optimise-call-expression-7.18.6.tgz#9369aa943ee7da47edab2cb4e838acf09d290ffe"
@@ -472,6 +509,11 @@
   resolved "https://registry.yarnpkg.com/@babel/helper-plugin-utils/-/helper-plugin-utils-7.20.2.tgz#d1b9000752b18d0877cff85a5c376ce5c3121629"
   integrity sha512-8RvlJG2mj4huQ4pZ+rU9lqKi9ZKiRmuvGuM2HlWmkmgOhbs6zEAw6IEiJ5cQqGbDzGZOhwuOQNtZMi/ENLjZoQ==
 
+"@babel/helper-plugin-utils@^7.27.1":
+  version "7.27.1"
+  resolved "https://registry.yarnpkg.com/@babel/helper-plugin-utils/-/helper-plugin-utils-7.27.1.tgz#ddb2f876534ff8013e6c2b299bf4d39b3c51d44c"
+  integrity sha512-1gn1Up5YXka3YYAHGKpbideQ5Yjf1tDa9qYcgysz+cNCXukyLl6DjPXhD3VRwSb8c0J9tA4b2+rHEZtc6R0tlw==
+
 "@babel/helper-remap-async-to-generator@^7.18.9":
   version "7.18.9"
   resolved "https://registry.yarnpkg.com/@babel/helper-remap-async-to-generator/-/helper-remap-async-to-generator-7.18.9.tgz#997458a0e3357080e54e1d79ec347f8a8cd28519"
@@ -520,6 +562,11 @@
   resolved "https://registry.yarnpkg.com/@babel/helper-string-parser/-/helper-string-parser-7.19.4.tgz#38d3acb654b4701a9b77fb0615a96f775c3a9e63"
   integrity sha512-nHtDoQcuqFmwYNYPz3Rah5ph2p8PFeFCsZk9A/48dPc/rGocJ5J3hAAZ7pb76VWX3fZKu+uEr/FhH5jLx7umrw==
 
+"@babel/helper-string-parser@^7.27.1":
+  version "7.27.1"
+  resolved "https://registry.yarnpkg.com/@babel/helper-string-parser/-/helper-string-parser-7.27.1.tgz#54da796097ab19ce67ed9f88b47bb2ec49367687"
+  integrity sha512-qMlSxKbpRlAridDExk92nSobyDdpPijUq2DW6oDnUqd0iOGxmQjyqhMIihI9+zv4LPyZdRje2cavWPbCbWm3eA==
+
 "@babel/helper-transform-fixture-test-runner@^7.18.6":
   version "7.19.4"
   resolved "https://registry.yarnpkg.com/@babel/helper-transform-fixture-test-runner/-/helper-transform-fixture-test-runner-7.19.4.tgz#1ef4d51032d7e17628664cadff62be9c0f928438"
@@ -536,6 +583,11 @@
   resolved "https://registry.yarnpkg.com/@babel/helper-validator-identifier/-/helper-validator-identifier-7.19.1.tgz#7eea834cf32901ffdc1a7ee555e2f9c27e249ca2"
   integrity sha512-awrNfaMtnHUr653GgGEs++LlAvW6w+DcPrOliSMXWCKo597CwL5Acf/wWdNkf/tfEQE3mjkeD1YOVZOUV/od1w==
 
+"@babel/helper-validator-identifier@^7.27.1":
+  version "7.27.1"
+  resolved "https://registry.yarnpkg.com/@babel/helper-validator-identifier/-/helper-validator-identifier-7.27.1.tgz#a7054dcc145a967dd4dc8fee845a57c1316c9df8"
+  integrity sha512-D2hP9eA+Sqx1kBZgzxZh0y1trbuU+JoDkiEwqhQ36nodYqJwyEIhPSdMNd7lOm/4io72luTPWH20Yda0xOuUow==
+
 "@babel/helper-validator-option@^7.18.6":
   version "7.18.6"
   resolved "https://registry.yarnpkg.com/@babel/helper-validator-option/-/helper-validator-option-7.18.6.tgz#bf0d2b5a509b1f336099e4ff36e1a63aa5db4db8"
@@ -591,6 +643,13 @@
   resolved "https://registry.yarnpkg.com/@babel/parser/-/parser-7.20.13.tgz#ddf1eb5a813588d2fb1692b70c6fce75b945c088"
   integrity sha512-gFDLKMfpiXCsjt4za2JA9oTMn70CeseCehb11kRZgvd7+F67Hih3OHOK24cRrWECJ/ljfPGac6ygXAs/C8kIvw==
 
+"@babel/parser@^7.27.2", "@babel/parser@^7.27.4", "@babel/parser@^7.27.5":
+  version "7.27.5"
+  resolved "https://registry.yarnpkg.com/@babel/parser/-/parser-7.27.5.tgz#ed22f871f110aa285a6fd934a0efed621d118826"
+  integrity sha512-OsQd175SxWkGlzbny8J3K8TnnDD0N3lrIUtB92xwyRpzaenGZhxDvxN/JgU00U3CDZNj9tPuDJ5H0WS4Nt3vKg==
+  dependencies:
+    "@babel/types" "^7.27.3"
+
 "@babel/plugin-bugfix-safari-id-destructuring-collision-in-function-expression@^7.18.6":
   version "7.18.6"
   resolved "https://registry.yarnpkg.com/@babel/plugin-bugfix-safari-id-destructuring-collision-in-function-expression/-/plugin-bugfix-safari-id-destructuring-collision-in-function-expression-7.18.6.tgz#da5b8f9a580acdfbe53494dba45ea389fb09a4d2"
@@ -1029,7 +1088,7 @@
     "@babel/helper-module-transforms" "^7.20.11"
     "@babel/helper-plugin-utils" "^7.20.2"
 
-"@babel/plugin-transform-modules-commonjs@7.18.6", "@babel/plugin-transform-modules-commonjs@^7.0.0", "@babel/plugin-transform-modules-commonjs@^7.13.8", "@babel/plugin-transform-modules-commonjs@^7.19.6", "@babel/plugin-transform-modules-commonjs@^7.20.11":
+"@babel/plugin-transform-modules-commonjs@7.18.6", "@babel/plugin-transform-modules-commonjs@^7.0.0", "@babel/plugin-transform-modules-commonjs@^7.13.8", "@babel/plugin-transform-modules-commonjs@^7.19.6":
   version "7.18.6"
   resolved "https://registry.yarnpkg.com/@babel/plugin-transform-modules-commonjs/-/plugin-transform-modules-commonjs-7.18.6.tgz#afd243afba166cca69892e24a8fd8c9f2ca87883"
   integrity sha512-Qfv2ZOWikpvmedXQJDSbxNqy7Xr/j2Y8/KfijM0iJyKkBTmWuvCA1yeH1yDM7NJhBW/2aXxeucLj6i80/LAJ/Q==
@@ -1039,6 +1098,14 @@
     "@babel/helper-simple-access" "^7.18.6"
     babel-plugin-dynamic-import-node "^2.3.3"
 
+"@babel/plugin-transform-modules-commonjs@^7.20.11":
+  version "7.27.1"
+  resolved "https://registry.yarnpkg.com/@babel/plugin-transform-modules-commonjs/-/plugin-transform-modules-commonjs-7.27.1.tgz#8e44ed37c2787ecc23bdc367f49977476614e832"
+  integrity sha512-OJguuwlTYlN0gBZFRPqwOGNWssZjfIUdS7HMYtN8c1KmwpwHFBwTeFZrg9XZa+DFTitWOW5iTAG7tyCUPsCCyw==
+  dependencies:
+    "@babel/helper-module-transforms" "^7.27.1"
+    "@babel/helper-plugin-utils" "^7.27.1"
+
 "@babel/plugin-transform-modules-systemjs@^7.19.6":
   version "7.20.11"
   resolved "https://registry.yarnpkg.com/@babel/plugin-transform-modules-systemjs/-/plugin-transform-modules-systemjs-7.20.11.tgz#467ec6bba6b6a50634eea61c9c232654d8a4696e"
@@ -1379,6 +1446,15 @@
     "@babel/parser" "^7.20.7"
     "@babel/types" "^7.20.7"
 
+"@babel/template@^7.27.2":
+  version "7.27.2"
+  resolved "https://registry.yarnpkg.com/@babel/template/-/template-7.27.2.tgz#fa78ceed3c4e7b63ebf6cb39e5852fca45f6809d"
+  integrity sha512-LPDZ85aEJyYSd18/DkjNh4/y1ntkE5KwUHWTiqgRxruuZL2F1yuHligVHLvcHY2vMHXttKFpJn6LwfI7cw7ODw==
+  dependencies:
+    "@babel/code-frame" "^7.27.1"
+    "@babel/parser" "^7.27.2"
+    "@babel/types" "^7.27.1"
+
 "@babel/traverse@^7.1.6", "@babel/traverse@^7.10.5", "@babel/traverse@^7.12.1", "@babel/traverse@^7.12.9", "@babel/traverse@^7.14.0", "@babel/traverse@^7.16.8", "@babel/traverse@^7.20.10", "@babel/traverse@^7.20.12", "@babel/traverse@^7.20.13", "@babel/traverse@^7.20.5", "@babel/traverse@^7.20.7", "@babel/traverse@^7.7.2":
   version "7.20.13"
   resolved "https://registry.yarnpkg.com/@babel/traverse/-/traverse-7.20.13.tgz#817c1ba13d11accca89478bd5481b2d168d07473"
@@ -1395,6 +1471,19 @@
     debug "^4.1.0"
     globals "^11.1.0"
 
+"@babel/traverse@^7.27.1", "@babel/traverse@^7.27.3":
+  version "7.27.4"
+  resolved "https://registry.yarnpkg.com/@babel/traverse/-/traverse-7.27.4.tgz#b0045ac7023c8472c3d35effd7cc9ebd638da6ea"
+  integrity sha512-oNcu2QbHqts9BtOWJosOVJapWjBDSxGCpFvikNR5TGDYDQf3JwpIoMzIKrvfoti93cLfPJEG4tH9SPVeyCGgdA==
+  dependencies:
+    "@babel/code-frame" "^7.27.1"
+    "@babel/generator" "^7.27.3"
+    "@babel/parser" "^7.27.4"
+    "@babel/template" "^7.27.2"
+    "@babel/types" "^7.27.3"
+    debug "^4.3.1"
+    globals "^11.1.0"
+
 "@babel/types@^7.0.0", "@babel/types@^7.12.1", "@babel/types@^7.12.7", "@babel/types@^7.16.8", "@babel/types@^7.18.6", "@babel/types@^7.18.9", "@babel/types@^7.19.0", "@babel/types@^7.2.0", "@babel/types@^7.20.0", "@babel/types@^7.20.2", "@babel/types@^7.20.5", "@babel/types@^7.20.7", "@babel/types@^7.3.0", "@babel/types@^7.3.3", "@babel/types@^7.4.4":
   version "7.20.7"
   resolved "https://registry.yarnpkg.com/@babel/types/-/types-7.20.7.tgz#54ec75e252318423fc07fb644dc6a58a64c09b7f"
@@ -1404,6 +1493,14 @@
     "@babel/helper-validator-identifier" "^7.19.1"
     to-fast-properties "^2.0.0"
 
+"@babel/types@^7.27.1", "@babel/types@^7.27.3":
+  version "7.27.6"
+  resolved "https://registry.yarnpkg.com/@babel/types/-/types-7.27.6.tgz#a434ca7add514d4e646c80f7375c0aa2befc5535"
+  integrity sha512-ETyHEk2VHHvl9b9jZP5IHPavHYk57EhanlRRuae9XCpb/j5bDCbPPMOBfCWhnl/7EDJz0jEMCi/RhccCE8r1+Q==
+  dependencies:
+    "@babel/helper-string-parser" "^7.27.1"
+    "@babel/helper-validator-identifier" "^7.27.1"
+
 "@bcoe/v8-coverage@^0.2.3":
   version "0.2.3"
   resolved "https://registry.yarnpkg.com/@bcoe/v8-coverage/-/v8-coverage-0.2.3.tgz#75a2e8b51cb758a7553d6804a5932d7aace75c39"
@@ -9561,6 +9658,13 @@ debug@^3.0.1, debug@^3.1.0, debug@^3.2.6, debug@^3.2.7:
   dependencies:
     ms "^2.1.1"
 
+debug@^4.3.1:
+  version "4.4.1"
+  resolved "https://registry.yarnpkg.com/debug/-/debug-4.4.1.tgz#e5a8bc6cbc4c6cd3e64308b0693a3d4fa550189b"
+  integrity sha512-KcKCqiftBJcZr++7ykoDIEwSa3XWowTfNPo92BYxjXiyYEVrUQh2aLyhxBCwww+heortUFxEJYcRzosstTEBYQ==
+  dependencies:
+    ms "^2.1.3"
+
 debuglog@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/debuglog/-/debuglog-1.0.1.tgz#aa24ffb9ac3df9a2351837cfb2d279360cd78492"
@@ -15465,6 +15569,11 @@ jsesc@^2.5.1:
   version "2.5.1"
   resolved "https://registry.yarnpkg.com/jsesc/-/jsesc-2.5.1.tgz#e421a2a8e20d6b0819df28908f782526b96dd1fe"
 
+jsesc@^3.0.2:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/jsesc/-/jsesc-3.1.0.tgz#74d335a234f67ed19907fdadfac7ccf9d409825d"
+  integrity sha512-/sM3dO2FOzXjKQhJuo0Q173wf2KOo8t4I8vHy6lF9poUp7bKT0/NHE8fPX23PwfhnykfqnC2xRxOnVw5XuGIaA==
+
 jsesc@~0.5.0:
   version "0.5.0"
   resolved "https://registry.yarnpkg.com/jsesc/-/jsesc-0.5.0.tgz#e7dee66e35d6fc16f710fe91d5cf69f70f08911d"
@@ -17952,6 +18061,11 @@ nanoid@^3.1.32, nanoid@^3.3.6:
   resolved "https://registry.yarnpkg.com/nanoid/-/nanoid-3.3.8.tgz#b1be3030bee36aaff18bacb375e5cce521684baf"
   integrity sha512-WNLf5Sd8oZxOm+TzppcYk8gVOgP+l58xNy58D0nbUnOxOWRWvlcCV4kUF7ltmI6PsrLl/BgKEyS4mqsGChFN0w==
 
+nanoid@^3.3.11:
+  version "3.3.11"
+  resolved "https://registry.yarnpkg.com/nanoid/-/nanoid-3.3.11.tgz#4f4f112cefbe303202f2199838128936266d185b"
+  integrity sha512-N8SpfPUnUp1bK+PMYW8qSWdl9U+wwNWI4QKxOYDy9JAro3WMX7p2OeVRF9v+347pnakNevPmiHhNmZ2HbFA76w==
+
 nanomatch@^1.2.9:
   version "1.2.13"
   resolved "https://registry.yarnpkg.com/nanomatch/-/nanomatch-1.2.13.tgz#b87a8aa4fc0de8fe6be88895b38983ff265bd119"
@@ -20218,7 +20332,7 @@ postcss@^6.0.0, postcss@^6.0.1, postcss@^6.0.22:
     source-map "^0.6.1"
     supports-color "^5.4.0"
 
-postcss@^8.1.10, postcss@^8.2.1, postcss@^8.2.15, postcss@^8.2.9, postcss@^8.3.11, postcss@^8.4.21, postcss@^8.4.24:
+postcss@^8.1.10, postcss@^8.2.1, postcss@^8.2.15, postcss@^8.2.9, postcss@^8.3.11, postcss@^8.4.21:
   version "8.4.24"
   resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.24.tgz#f714dba9b2284be3cc07dbd2fc57ee4dc972d2df"
   integrity sha512-M0RzbcI0sO/XJNucsGjvWU9ERWxb/ytp1w6dKtxTKgixdtQDq4rmx/g8W1hnaheq9jgwL/oyEdH5Bc4WwJKMqg==
@@ -20227,6 +20341,15 @@ postcss@^8.1.10, postcss@^8.2.1, postcss@^8.2.15, postcss@^8.2.9, postcss@^8.3.1
     picocolors "^1.0.0"
     source-map-js "^1.0.2"
 
+postcss@^8.5.6:
+  version "8.5.6"
+  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.5.6.tgz#2825006615a619b4f62a9e7426cc120b349a8f3c"
+  integrity sha512-3Ybi1tAuwAP9s0r1UQ2J4n5Y0G05bJkpUIO0/bI9MhwmD70S5aTWbXGBwxHrelT+XM1k6dM0pk+SwNkpTRN7Pg==
+  dependencies:
+    nanoid "^3.3.11"
+    picocolors "^1.1.1"
+    source-map-js "^1.2.1"
+
 preact@^10.15.1:
   version "10.15.1"
   resolved "https://registry.yarnpkg.com/preact/-/preact-10.15.1.tgz#a1de60c9fc0c79a522d969c65dcaddc5d994eede"
@@ -22805,6 +22928,11 @@ source-map-js@^1.0.2:
   resolved "https://registry.yarnpkg.com/source-map-js/-/source-map-js-1.0.2.tgz#adbc361d9c62df380125e7f161f71c826f1e490c"
   integrity sha512-R0XvVJ9WusLiqTCEiGCmICCMplcCkIwwR11mOSD9CR5u+IXYdiseeEuXCVAjS54zqwkLcPNnmU4OeJ6tUrWhDw==
 
+source-map-js@^1.2.1:
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/source-map-js/-/source-map-js-1.2.1.tgz#1ce5650fddd87abc099eda37dcff024c2667ae46"
+  integrity sha512-UXWMKhLOwVKb728IUtQPXxfYU+usdybtUrK/8uGE8CQMvrhOpwvzDBwj0QhSL7MQc7vIsISBG8VQ8+IDQxpfQA==
+
 source-map-resolve@^0.5.0, source-map-resolve@^0.5.2:
   version "0.5.2"
   resolved "https://registry.yarnpkg.com/source-map-resolve/-/source-map-resolve-0.5.2.tgz#72e2cc34095543e43b2c62b2c4c10d4a9054f259"