diff --git a/esp_encrypted_img/CHANGELOG.md b/esp_encrypted_img/CHANGELOG.md
index 8eb5415e71..d4a4cd34fd 100644
--- a/esp_encrypted_img/CHANGELOG.md
+++ b/esp_encrypted_img/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 2.2.1
+
+- Build system: fix the dependency for generating pre encrypted image
+
 ## 2.2.0
 
 ### Enhancements:
diff --git a/esp_encrypted_img/idf_component.yml b/esp_encrypted_img/idf_component.yml
index c5318951fb..d2118c37d9 100644
--- a/esp_encrypted_img/idf_component.yml
+++ b/esp_encrypted_img/idf_component.yml
@@ -1,4 +1,4 @@
-version: "2.2.0"
+version: "2.2.1"
 description: ESP Encrypted Image Abstraction Layer
 url: https://github.com/espressif/idf-extra-components/tree/master/esp_encrypted_img
 dependencies:
diff --git a/esp_encrypted_img/project_include.cmake b/esp_encrypted_img/project_include.cmake
index 1002cbe61b..61c90ef3a4 100644
--- a/esp_encrypted_img/project_include.cmake
+++ b/esp_encrypted_img/project_include.cmake
@@ -1,18 +1,25 @@
 set(ESP_IMG_GEN_TOOL_PATH ${CMAKE_CURRENT_LIST_DIR}/tools/esp_enc_img_gen.py)
 
+idf_build_get_property(build_dir BUILD_DIR)
+if(CONFIG_SECURE_BOOT_BUILD_SIGNED_BINARIES)
+    set(app_dependency "${build_dir}/.signed_bin_timestamp")
+else()
+    set(app_dependency "${build_dir}/.bin_timestamp")
+endif()
+
 function(create_esp_enc_img input_file rsa_key_file output_file app)
     cmake_parse_arguments(arg "${options}" "" "${multi}" "${ARGN}")
     idf_build_get_property(python PYTHON)
 
     add_custom_command(OUTPUT ${output_file}
-        POST_BUILD
         COMMAND ${python} ${ESP_IMG_GEN_TOOL_PATH} encrypt
             ${input_file}
             ${rsa_key_file} ${output_file}
-        DEPENDS gen_project_binary
+        DEPENDS "${app_dependency}"
         COMMENT "Generating pre-encrypted binary"
         VERBATIM
     )
-    add_custom_target(encrypt_bin_target DEPENDS ${output_file})
-    add_dependencies(${app} encrypt_bin_target)
+    get_filename_component(name ${output_file} NAME_WE)
+    add_custom_target(enc_bin_target_${name} ALL DEPENDS ${output_file})
+    add_dependencies(enc_bin_target_${name} gen_project_binary)
 endfunction()