diff --git a/.github/workflows/codecov.yml b/.github/workflows/codecov.yml
index 0b96a92265..918d3f718d 100644
--- a/.github/workflows/codecov.yml
+++ b/.github/workflows/codecov.yml
@@ -38,6 +38,7 @@ jobs:
     runs-on: ubuntu-24.04
     env:
       JAVA_OPTS: -Xmx8g
+      MAVEN_OPTS: -Xmx8g
     steps:
       - uses: actions/checkout@v4
       - uses: teatimeguest/setup-texlive-action@v3.3.0
diff --git a/.github/workflows/mvn.yml b/.github/workflows/mvn.yml
index 3e91c3da12..a2381b6fee 100644
--- a/.github/workflows/mvn.yml
+++ b/.github/workflows/mvn.yml
@@ -44,6 +44,7 @@ jobs:
     env:
       CONVERT_PATH: /tmp/antlr4-to-bnf-converter
       JAVA_OPTS: -Xmx8g
+      MAVEN_OPTS: -Xmx8g
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-java@v4
diff --git a/.rultor.yml b/.rultor.yml
index 9d86c1751a..0f8d7db33a 100644
--- a/.rultor.yml
+++ b/.rultor.yml
@@ -39,9 +39,10 @@ install: |
   gem install texsc:0.6.0
   gem install texqc:0.6.0
   export JAVA_OPTS="-Xmx8g"
+  export MAVEN_OPTS="-Xmx8g"
 merge:
   script: |
-    JAVA_OPTS="-Xmx8g" mvn clean install -Pqulice --errors -Dstyle.color=never
+    mvn clean install -Pqulice --errors -Dstyle.color=never
 release:
   pre: false
   script: |-