diff --git a/image_manager_main.cpp b/image_manager_main.cpp
index 1aeb698..f4dc03f 100644
--- a/image_manager_main.cpp
+++ b/image_manager_main.cpp
@@ -29,7 +29,7 @@
         bus.attach_event(loop, SD_EVENT_PRIORITY_NORMAL);
         sd_event_loop(loop);
     }
-    catch (std::exception& e)
+    catch (const std::exception& e)
     {
         lg2::error("Error in event loop: {ERROR}", "ERROR", e);
         return -1;
diff --git a/serialize.cpp b/serialize.cpp
index c471188..52c5ac5 100644
--- a/serialize.cpp
+++ b/serialize.cpp
@@ -74,7 +74,7 @@
             iarchive(cereal::make_nvp(priorityName, priority));
             return true;
         }
-        catch (cereal::Exception& e)
+        catch (const cereal::Exception& e)
         {
             fs::remove_all(path);
         }
@@ -134,7 +134,7 @@
             iarchive(cereal::make_nvp(purposeName, purpose));
             return true;
         }
-        catch (cereal::Exception& e)
+        catch (const cereal::Exception& e)
         {
             fs::remove_all(path);
         }
diff --git a/sync_manager_main.cpp b/sync_manager_main.cpp
index 271e67b..db269a9 100644
--- a/sync_manager_main.cpp
+++ b/sync_manager_main.cpp
@@ -31,7 +31,7 @@
         bus.attach_event(loop, SD_EVENT_PRIORITY_NORMAL);
         sd_event_loop(loop);
     }
-    catch (std::exception& e)
+    catch (const std::exception& e)
     {
         lg2::error("Error in event loop: {ERROR}", "ERROR", e);
         sd_event_unref(loop);