diff --git a/.github/workflows/ci-conan.yml b/.github/workflows/ci-conan.yml
index 39c4758..c909693 100644
--- a/.github/workflows/ci-conan.yml
+++ b/.github/workflows/ci-conan.yml
@@ -11,7 +11,7 @@ jobs:
       fail-fast: false
       matrix:
         build_type: [Debug, Release]
-        compiler_version: [11]
+        compiler_version: [9]
         option_proxyfmu: ['proxyfmu=True', 'proxyfmu=False']
 
     steps:
diff --git a/conanfile.py b/conanfile.py
index 5342b3b..205ebe6 100644
--- a/conanfile.py
+++ b/conanfile.py
@@ -12,7 +12,7 @@ class CosimCLIConan(ConanFile):
     def requirements(self):
         self.tool_requires("cmake/[>=3.19]")
         if self.settings.os == "Linux":
-            self.tool_requires("patchelf/[>=0.18]")
+            self.tool_requires("patchelf/[<0.18]")
         self.requires("libcosim/0.11.0@osp/testing-feature_conan-2")
         self.requires("boost/[>=1.71]")