diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 530c051..f07d96b 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -33,7 +33,27 @@ jobs:
 
       - name: make
         run: make build/kristall
-        
+
+  build_cmake:
+    runs-on: ubuntu-20.04
+    steps:
+      - uses: actions/checkout@v2
+
+      - uses: jurplel/install-qt-action@v2
+        with:
+          version: "5.12.8"
+
+      - name: Install OpenSSL
+        run: sudo apt install -y libssl-dev
+
+      - name: Configure the project
+        uses: threeal/cmake-action@v1.3.0
+        with:
+          build-dir: build
+
+      - name: Build the project
+        run: cmake --build build
+
 # Disabled until both aqinstall and install-qt-action support the fixes…
 #  build_windows:
 #    runs-on: windows-latest
diff --git a/CMakeLists.txt b/CMakeLists.txt
index b66d837..b5e1924 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -7,11 +7,19 @@ if(NOT KRISTALL_VERSION)
         OUTPUT_STRIP_TRAILING_WHITESPACE
     )
 
+    if(NOT KRISTALL_CMAKE_VERSION)
+        set(KRISTALL_CMAKE_VERSION "0.0.0")
+    endif()
+
     execute_process(COMMAND git describe --tags
         WORKING_DIRECTORY ${CMAKE_CURRENT_LIST_DIR}
         OUTPUT_VARIABLE KRISTALL_VERSION
         OUTPUT_STRIP_TRAILING_WHITESPACE
     )
+
+    if(NOT KRISTALL_VERSION)
+        set(KRISTALL_VERSION "development")
+    endif()
 endif()
 
 # CMake requires the following format for versions:
@@ -170,7 +178,7 @@ if(QT_VERSION_MAJOR EQUAL 6)
     qt_finalize_executable(${PROJECT_NAME})
 endif()
 
-find_package(OpenSSL 3.0 REQUIRED)
+find_package(OpenSSL 1.1 REQUIRED)
 target_link_libraries(${PROJECT_NAME} PRIVATE OpenSSL::SSL)
 
 if(NOT UNIX)