diff --git a/CMakeLists.txt b/CMakeLists.txt
index 76a5ebce5..1a0c2f4c6 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -51,10 +51,13 @@ if (CMAKE_COMPILER_IS_GNUCXX OR CMAKE_COMPILER_IS_CLANG OR APPLE)
             -Wshadow
             # -Wconversion # FIXME
             -Werror
-            -Wno-unknown-pragmas            # We use pragmas to disable warnings we understand.
+            # Allow deprecation warnings to not be treated as errors
+            -Wno-error=deprecated-declarations
+            # We use pragmas to disable warnings we understand.
             # So we need to disable the warning about pragmas.
-            -Wno-unknown-warning-option     # Disable warnings about disabling warnings we have
-            # disabled.
+            -Wno-unknown-pragmas
+            # Disable warnings about disabling warnings we have disabled.
+            -Wno-unknown-warning-option
     )
 
     if (APPLE)