diff --git a/.cirrus.yml b/.cirrus.yml
index 816eeba2cb..f1244a2410 100644
--- a/.cirrus.yml
+++ b/.cirrus.yml
@@ -10,7 +10,7 @@ task:
   build_script:
     - mkdir build
     - cd build
-    - cmake -DLLVM_DIR=/usr/local/llvm13 -DMAKE_BINARY=/usr/local/bin/gmake -DJSON_SRC_DIR=/usr/local -DIMMER_SRC_DIR=/usr/local -DENABLE_TCMALLOC:BOOL=true -DENABLE_POSIX_RUNTIME:BOOL=ON -DENABLE_SOLVER_Z3:BOOL=true -DENABLE_SYSTEM_TESTS:BOOL=ON -DENABLE_WARNINGS_AS_ERRORS=0 ..
+    - cmake -DLLVM_DIR=/usr/local/llvm13 -DMAKE_BINARY=/usr/local/bin/gmake -DJSON_SRC_DIR=/usr/local -DIMMER_SRC_DIR=/usr/local -DENABLE_TCMALLOC:BOOL=true -DENABLE_POSIX_RUNTIME:BOOL=ON -DENABLE_SOLVER_Z3:BOOL=true -DENABLE_SYSTEM_TESTS:BOOL=ON -DENABLE_WARNINGS_AS_ERRORS=1 ..
     - gmake
   test_script:
     - sed -i.bak -e 's/lit\./lit13\./' test/lit.cfg