diff --git a/.github/setup-libressl.sh b/.github/setup-libressl.sh
index 72325eade3..fd80d7699d 100755
--- a/.github/setup-libressl.sh
+++ b/.github/setup-libressl.sh
@@ -2,7 +2,8 @@
 
 set -ex -o xtrace
 
-V=libressl-3.8.1
+# WARNING: Change this also in .github/workflows/linux.yml
+V=libressl-4.0.0
 
 sudo apt-get remove -y libssl-dev
 
diff --git a/.github/workflows/linux.yml b/.github/workflows/linux.yml
index 53aa595fe6..96cad21d9f 100644
--- a/.github/workflows/linux.yml
+++ b/.github/workflows/linux.yml
@@ -28,7 +28,7 @@ env:
   JAVA_DEPS: |
     ant openjdk-8-jdk maven cmake
   JCARDSIM: https://github.com/Jakuje/jcardsim.git
-  LIBRESSL_VERSION: 3.8.1
+  LIBRESSL_VERSION: 4.0.0
 
 jobs:
   build: