diff --git a/infra/packet_parser/CMakeLists.txt b/infra/packet_parser/CMakeLists.txt
index 13e9547..5ed91e5 100644
--- a/infra/packet_parser/CMakeLists.txt
+++ b/infra/packet_parser/CMakeLists.txt
@@ -1,10 +1,10 @@
 add_library(packet
-    packet_utils.cpp
-    packet_parser.cpp
-    packet_builder.cpp
-    packet_filter.cpp
-    packet_dump.cpp
-    checksum.cpp)
+    packet_utils.c
+    packet_parser.c
+    packet_builder.c
+    packet_filter.c
+    packet_dump.c
+    checksum.c)
 target_include_directories(packet PUBLIC ${CMAKE_CURRENT_LIST_DIR})
 target_include_directories(packet PUBLIC ${CMAKE_SOURCE_DIR}/deps/uthash)
 target_include_directories(packet PUBLIC ${CMAKE_SOURCE_DIR}/include)
diff --git a/infra/packet_parser/checksum.cpp b/infra/packet_parser/checksum.c
similarity index 100%
rename from infra/packet_parser/checksum.cpp
rename to infra/packet_parser/checksum.c
diff --git a/infra/packet_parser/packet_builder.cpp b/infra/packet_parser/packet_builder.c
similarity index 100%
rename from infra/packet_parser/packet_builder.cpp
rename to infra/packet_parser/packet_builder.c
diff --git a/infra/packet_parser/packet_dump.cpp b/infra/packet_parser/packet_dump.c
similarity index 100%
rename from infra/packet_parser/packet_dump.cpp
rename to infra/packet_parser/packet_dump.c
diff --git a/infra/packet_parser/packet_filter.cpp b/infra/packet_parser/packet_filter.c
similarity index 100%
rename from infra/packet_parser/packet_filter.cpp
rename to infra/packet_parser/packet_filter.c
diff --git a/infra/packet_parser/packet_parser.cpp b/infra/packet_parser/packet_parser.c
similarity index 100%
rename from infra/packet_parser/packet_parser.cpp
rename to infra/packet_parser/packet_parser.c
diff --git a/infra/packet_parser/packet_utils.cpp b/infra/packet_parser/packet_utils.c
similarity index 100%
rename from infra/packet_parser/packet_utils.cpp
rename to infra/packet_parser/packet_utils.c