diff --git a/conanfile.py b/conanfile.py
index a035000..35ca307 100644
--- a/conanfile.py
+++ b/conanfile.py
@@ -31,7 +31,7 @@ def set_version(self):
                        "conanfile.py", "CMakeLists.txt", "LICENSE", "README.md", "version.txt")
 
     def requirements(self):
-        self.tool_requires("cmake/[>=3.15]")
+        self.tool_requires("cmake/[>=3.15 <4.0]")
         self.tool_requires("thrift/[~0.20]")
         self.requires("cli11/[~2.3]")
         self.requires("fmilibrary/[~2.3]")
diff --git a/version.txt b/version.txt
index 1d0ba9e..267577d 100644
--- a/version.txt
+++ b/version.txt
@@ -1 +1 @@
-0.4.0
+0.4.1