diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0f773ae..5d2a64a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -59,7 +59,14 @@ add_prefix(priv_include_dirs "${CMAKE_CURRENT_LIST_DIR}/freemodbus/" ${priv_incl
 
 message(STATUS "DEBUG: Use esp-modbus component folder: ${CMAKE_CURRENT_LIST_DIR}.")
 
+set(requires driver lwip)
+
+# esp_timer component was introduced in v4.2
+if("${IDF_VERSION_MAJOR}.${IDF_VERSION_MINOR}" VERSION_GREATER "4.1")
+    list(APPEND requires esp_timer)
+endif()
+
 idf_component_register(SRCS "${srcs}"
                     INCLUDE_DIRS "${include_dirs}"
                     PRIV_INCLUDE_DIRS "${priv_include_dirs}"
-                    REQUIRES driver lwip)
+                    REQUIRES ${requires})
diff --git a/docs/_static/modbus_docs_versions.js b/docs/_static/modbus_docs_versions.js
index 14ce998..2827286 100644
--- a/docs/_static/modbus_docs_versions.js
+++ b/docs/_static/modbus_docs_versions.js
@@ -1,10 +1,11 @@
 var DOCUMENTATION_VERSIONS = {
-    DEFAULTS: { has_targets: false,
-                supported_targets: [ "esp32" ]
+    DEFAULTS: { has_targets: true,
+                supported_targets: [ "esp32", "esp32s2", "esp32s3", "esp32c3" ]
               },
     VERSIONS: [
-        { name: "latest", has_targets: false, supported_targets: [ "esp32", "esp32s2", "esp32s3", "esp32c3" ] },
-        { name: "v1.0.0", old:false, has_targets:true, supported_targets: [ "esp32", "esp32s2", "esp32s3", "esp32c3" ]}
+        { name: "latest" },
+        { name: "v1.0.1", old:false },
+        { name: "v1.0.0", old:true }
     ],
     IDF_TARGETS: [
        { text: "ESP32", value: "esp32"},
diff --git a/idf_component.yml b/idf_component.yml
index 57cb047..479ed1b 100644
--- a/idf_component.yml
+++ b/idf_component.yml
@@ -1,4 +1,4 @@
-version: "1.0.0"
+version: "1.0.1"
 description: ESP-MODBUS is the official Modbus library for Espressif SoCs.
 url: https://github.com/espressif/esp-modbus
 dependencies: