diff --git a/README.md b/README.md
index 0340782..4d3f9e6 100644
--- a/README.md
+++ b/README.md
@@ -73,7 +73,7 @@ extern const size_t frogfs_bin_len;
 
 You have the option of creating a binary without linking it with your
 application. A CMake function is provided to output a binary with target
-`generate_${name}`.
+`generate-${name}`.
 
     declare_frogfs_bin(path [CONFIG yaml] [NAME name])
 
@@ -91,7 +91,7 @@ idf_component_get_property(sub_args esptool_py FLASH_SUB_ARGS)
 esptool_py_flash_target(${FROGFS_NAME}-flash "${main_args}" "${sub_args}" ALWAYS_PLAINTEXT)
 
 esptool_py_flash_to_partition(${FROGFS_NAME}-flash storage ${BUILD_DIR}/CMakeFiles/${FROGFS_NAME}.bin)
-add_dependencies(${FROGFS_NAME}-flash generate_${FROGFS_NAME}_bin)
+add_dependencies(${FROGFS_NAME}-flash generate-${FROGFS_NAME}-bin)
 ```
 
 You can invoke the flash process by running `idf.py frogfs-flash`.
diff --git a/cmake/functions.cmake b/cmake/functions.cmake
index ac2c6e6..cc8b32e 100644
--- a/cmake/functions.cmake
+++ b/cmake/functions.cmake
@@ -24,7 +24,7 @@ macro(generate_frogfs_rules)
         set(Python3_VENV_EXECUTABLE ${Python3_VENV}/Scripts/python.exe)
     else()
         set(Python3_VENV_EXECUTABLE ${Python3_VENV}/bin/python)
-    endif()    
+    endif()
 
     if(NOT TARGET frogfs_venv)
         add_custom_target(frogfs_venv
@@ -81,7 +81,7 @@ endfunction()
 function(declare_frogfs_bin)
     generate_frogfs_rules(${ARGV})
 
-    add_custom_target(generate_${ARG_NAME}_bin
+    add_custom_target(generate-${ARG_NAME}-bin
         DEPENDS frogfs_preprocess_${ARG_NAME} ${OUTPUT}.bin
     )
 endfunction()
diff --git a/requirements.txt b/requirements.txt
index a45015b..24cec9e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,2 +1,3 @@
 pyyaml~=6.0.2
 brotli~=1.1.0
+zopfli~=0.2.3
diff --git a/tools/transform-deflate.py b/tools/transform-deflate.py
index 8729ebb..79e7797 100644
--- a/tools/transform-deflate.py
+++ b/tools/transform-deflate.py
@@ -1,5 +1,9 @@
 import sys
-import zlib
+# Try to use zopfli first, else fallback to zlib
+try:
+    import zopfli.zlib as zlib
+except:
+    import zlib
 
 if __name__ == '__main__':
     while True: