diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 82cc468d..150fe35d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -13,14 +13,6 @@ jobs:
     strategy:
       matrix:
         include:
-          - mw: 'REL1_35'
-            php: 7.4
-          - mw: 'REL1_36'
-            php: 7.4
-          - mw: 'REL1_37'
-            php: 7.4
-          - mw: 'REL1_38'
-            php: 8.0
           - mw: 'REL1_39'
             php: 8.1
           - mw: 'REL1_40'
@@ -89,7 +81,7 @@ jobs:
         run: |
           php tests/phpunit/phpunit.php -c extensions/Maps --coverage-clover coverage.xml
           bash <(curl -s https://codecov.io/bash)
-        if: matrix.mw == 'REL1_38'
+        if: matrix.mw == 'REL1_39'
 
 
 #  Psalm:
diff --git a/.github/workflows/installMediaWiki.sh b/.github/workflows/installMediaWiki.sh
index bbb17782..a5a1f3e7 100644
--- a/.github/workflows/installMediaWiki.sh
+++ b/.github/workflows/installMediaWiki.sh
@@ -5,7 +5,7 @@ set -ex
 MW_BRANCH=$1
 EXTENSION_NAME=$2
 
-wget "https://github.com/wikimedia/mediawiki/archive/$MW_BRANCH.tar.gz" -nv
+wget "https://github.com/wikimedia/mediawiki/archive/refs/heads/$MW_BRANCH.tar.gz" -nv
 
 tar -zxf $MW_BRANCH.tar.gz
 mv mediawiki-$MW_BRANCH mediawiki
diff --git a/extension.json b/extension.json
index 4276d9db..aa2eccf3 100644
--- a/extension.json
+++ b/extension.json
@@ -12,7 +12,7 @@
 	"type": "parserhook",
 
 	"requires": {
-		"MediaWiki": ">= 1.35.0",
+		"MediaWiki": ">= 1.39.0",
 		"platform": {
 			"php": ">= 7.4"
 		}