nanoframework · josesimoes · Jul 22, 2026 · Jul 22, 2026 · Jul 22, 2026 · Jul 22, 2026
diff --git a/.devcontainer/All/Dockerfile.All b/.devcontainer/All/Dockerfile.All
@@ -1 +1 @@
-FROM ghcr.io/nanoframework/dev-container-all:v2.69
+FROM ghcr.io/nanoframework/dev-container-all:v2.70
diff --git a/.devcontainer/All/Dockerfile.All.SRC b/.devcontainer/All/Dockerfile.All.SRC
@@ -2,7 +2,7 @@
 # IDF MIGRATION CHECKLIST
 # When upgrading ESP-IDF to a new version, review and update the following:
 #
-# 1. ESP-IDF version: search for the git clone --branch tag below (currently v5.5.4)
+# 1. ESP-IDF version: search for the git clone --branch tag below (currently v5.5.5)
 # 2. ESP_PATCH_VER: the GCC toolchain patch version installed by IDF.
 #    After running install.sh in the new IDF, check the toolchain version at:
 #      ~/.espressif/tools/xtensa-esp-elf/ and ~/.espressif/tools/riscv32-esp-elf/
@@ -124,7 +124,7 @@ RUN git clone --branch STABLE-2_1_3_RELEASE https://github.com/lwip-tcpip/lwip.g
 
 # Clone ESP-IDF
 # >>> IDF MIGRATION: update the branch tag to the new IDF version <<<
-RUN git clone --branch v5.5.4 https://github.com/espressif/esp-idf --depth 1 --recursive ./sources/esp-idf
+RUN git clone --branch v5.5.5 https://github.com/espressif/esp-idf --depth 1 --recursive ./sources/esp-idf
 
 # Clone what is needed for TI
 RUN git clone --branch 4.10.00.07 https://github.com/nanoframework/SimpleLink_CC32xx_SDK.git --depth 1 ./sources/SimpleLinkCC32 \

diff --git a/.devcontainer/ESP32/Dockerfile.ESP32 b/.devcontainer/ESP32/Dockerfile.ESP32
@@ -1 +1 @@
-FROM ghcr.io/nanoframework/dev-container-esp32:v2.42
+FROM ghcr.io/nanoframework/dev-container-esp32:v2.43
diff --git a/.devcontainer/ESP32/Dockerfile.ESP32.SRC b/.devcontainer/ESP32/Dockerfile.ESP32.SRC
@@ -2,7 +2,7 @@
 # IDF MIGRATION CHECKLIST
 # When upgrading ESP-IDF to a new version, review and update the following:
 #
-# 1. ESP-IDF version: search for the git clone --branch tag below (currently v5.5.4)
+# 1. ESP-IDF version: search for the git clone --branch tag below (currently v5.5.5)
 # 2. ESP_PATCH_VER: the GCC toolchain patch version installed by IDF.
 #    After running install.sh in the new IDF, check the toolchain version at:
 #      ~/.espressif/tools/xtensa-esp-elf/ and ~/.espressif/tools/riscv32-esp-elf/
@@ -71,7 +71,7 @@ RUN git clone --branch R0.16 https://github.com/abbrev/fatfs.git --depth 1 ./sou
 
 # Clone ESP-IDF
 # >>> IDF MIGRATION: update the branch tag to the new IDF version <<<
-RUN git clone --branch v5.5.4 https://github.com/espressif/esp-idf --depth 1 --recursive ./sources/esp-idf
+RUN git clone --branch v5.5.5 https://github.com/espressif/esp-idf --depth 1 --recursive ./sources/esp-idf
 
 # Installing python dependencies for the container
 RUN pip3 install --no-cache-dir pyserial "kconfiglib>=14.1.0"

diff --git a/.github/copilot-instructions.md b/.github/copilot-instructions.md
@@ -56,7 +56,7 @@ Kconfig*              # Kconfig configuration system (feature flags, APIs, RTOS,
 
 - **CMake 3.31+** and **Ninja** build system.
 - Cross-compilation toolchains (ARM GCC, Xtensa GCC, RISC-V GCC) depending on target.
-- Platform SDKs (ESP-IDF v5.5.4, ChibiOS, ThreadX, etc.).
+- Platform SDKs (ESP-IDF v5.5.5, ChibiOS, ThreadX, etc.).
 - Python 3 with `kconfiglib>=14.1.0` (from `requirements.txt`).
 - **Dev containers** are the recommended way to build. Pre-built images:
   - `ghcr.io/nanoframework/dev-container-all` (all platforms)
@@ -205,4 +205,4 @@ Follow the PR template at `.github/PULL_REQUEST_TEMPLATE.md`:
 4. **Kconfig Python dependency**: The Kconfig system requires `kconfiglib` (`pip install kconfiglib`). This is needed for `cmake --preset` to work.
 5. **Submodules**: The repo has a submodule for community targets (`targets-community`). Clone with `--recurse-submodules` or run `git submodule update --init`.
 6. **File encoding**: Most files use UTF-8 with BOM and CRLF line endings (see `.editorconfig`). Kconfig files must NOT have BOM.
-7. **ESP32 targets**: ESP-IDF v5.5.4 is the pinned SDK version. The ESP32 build integrates with the IDF build system (idf.py/CMake).
+7. **ESP32 targets**: ESP-IDF v5.5.5 is the pinned SDK version. The ESP32 build integrates with the IDF build system (idf.py/CMake).
diff --git a/CMake/riscv-esp32p4.json b/CMake/riscv-esp32p4.json
@@ -17,7 +17,7 @@
                 "NF_INTEROP_ASSEMBLIES": null
             },
             "environment": {
-                "ESP_IDF_VERSION": "5.4"
+                "ESP_IDF_VERSION": "5.5.5"
             }
         }
     ]

diff --git a/azure-pipelines-nightly.yml b/azure-pipelines-nightly.yml
@@ -18,7 +18,7 @@ resources:
       type: github
       name: espressif/esp-idf
       endpoint: nanoframework
-      ref: refs/tags/v5.5.4
+      ref: refs/tags/v5.5.5
 
 # scheduled build
 # the schedule is defined at the AZDO web interface because of inconsistencies with time zones
@@ -603,7 +603,7 @@ jobs:
       IDF_PATH: "$(Agent.BuildDirectory)/s/esp-idf"
       PIP_CACHE_DIR: $(Pipeline.Workspace)/.pip
       TargetPlatform: "esp32"
-      IDF_TAG: "v5.5.4"
+      IDF_TAG: "v5.5.5"
 
     steps:
       - checkout: self

diff --git a/azure-pipelines.yml b/azure-pipelines.yml
@@ -46,7 +46,7 @@ resources:
       type: github
       name: espressif/esp-idf
       endpoint: nanoframework
-      ref: refs/tags/v5.5.4
+      ref: refs/tags/v5.5.5
     - repository: mscorlib
       type: github
       name: nanoframework/CoreLibrary
@@ -431,7 +431,7 @@ jobs:
     variables:
       DOTNET_NOLOGO: true
       # creates a counter and assigns it to the revision variable
-      REVISION: $[counter('STM32_1_17_0_versioncounter', 0)]
+      REVISION: $[counter('STM32_1_18_0_versioncounter', 0)]
       HelperPackageVersion: $[counter('HelperPackageVersioncounter', 0)]
       TargetPlatform: "stm32"
 
@@ -505,7 +505,7 @@ jobs:
     variables:
       DOTNET_NOLOGO: true
       # creates a counter and assigns it to the revision variable
-      REVISION: $[counter('RP_1_17_0_versioncounter', 0)]
+      REVISION: $[counter('RP_1_18_0_versioncounter', 0)]
       HelperPackageVersion: $[counter('HelperPackageVersioncounter', 0)]
       TargetPlatform: "rp"
 
@@ -646,11 +646,11 @@ jobs:
     variables:
       DOTNET_NOLOGO: true
       # creates a counter and assigns it to the revision variable
-      REVISION: $[counter('ESP32_1_17_0_versioncounter', 0)]
+      REVISION: $[counter('ESP32_1_18_0_versioncounter', 0)]
       IDF_PATH: "$(Agent.BuildDirectory)/s/esp-idf"
       PIP_CACHE_DIR: $(Pipeline.Workspace)/.pip
       TargetPlatform: "esp32"
-      IDF_TAG: "v5.5.4"
+      IDF_TAG: "v5.5.5"
 
     steps:
       - checkout: self
@@ -731,7 +731,7 @@ jobs:
     variables:
       DOTNET_NOLOGO: true
       # creates a counter and assigns it to the revision variable
-      REVISION: $[counter('NXP_1_17_0_versioncounter', 0)]
+      REVISION: $[counter('NXP_1_18_0_versioncounter', 0)]
       GIT_LFS_SKIP_SMUDGE: 1
       TargetPlatform: "freertos"
 
@@ -812,7 +812,7 @@ jobs:
     variables:
       DOTNET_NOLOGO: true
       # creates a counter and assigns it to the revision variable
-      REVISION: $[counter('TI_1_17_0_versioncounter', 0)]
+      REVISION: $[counter('TI_1_18_0_versioncounter', 0)]
       HelperPackageVersion: $[counter('HelperPackageVersioncounter', 0)]
       TargetPlatform: "ti_simplelink"
 
@@ -886,7 +886,7 @@ jobs:
 
     variables:
       # creates a counter and assigns it to the revision variable
-      REVISION: $[counter('THREADX_1_17_0_versioncounter', 0)]
+      REVISION: $[counter('THREADX_1_18_0_versioncounter', 0)]
       HelperPackageVersion: $[counter('HelperPackageVersioncounter', 0)]
       TargetPlatform: "efm32"
 
@@ -940,7 +940,7 @@ jobs:
         value: true
       # creates a counter and assigns it to the revision variable
       - name: REVISION
-        value: $[counter('WIN32_1_17_0_versioncounter', 0)]
+        value: $[counter('WIN32_1_18_0_versioncounter', 0)]
       - name: LITTLEFS_PATH
         value: "D:/a/1/s/littlefs"
 
@@ -1180,7 +1180,7 @@ jobs:
     variables:
       - group: sign-client-credentials
       - name: REVISION
-        value: $[counter('POSIX_1_17_0_versioncounter', 0)]
+        value: $[counter('POSIX_1_18_0_versioncounter', 0)]
 
     steps:
       - checkout: self

diff --git a/targets/ESP32/CMakeLists.txt b/targets/ESP32/CMakeLists.txt
@@ -47,7 +47,7 @@ endif()
 # 3. cache tag in build and download AZDO yaml templates                        #
 #################################################################################
 #################################################################################
-set(ESP32_IDF_TAG "5.5.4" CACHE INTERNAL "ESP32 IDF tag")
+set(ESP32_IDF_TAG "5.5.5" CACHE INTERNAL "ESP32 IDF tag")
 #################################################################################
 #################################################################################
 

diff --git a/version.json b/version.json
@@ -1,6 +1,6 @@
 {
   "$schema": "https://raw.githubusercontent.com/dotnet/Nerdbank.GitVersioning/master/src/NerdBank.GitVersioning/version.schema.json",
-  "version": "1.17.0",
+  "version": "1.18.0",
   "assemblyVersion": {
     "precision": "revision"
   },
Original file line number	Diff line number	Diff line change
		@@ -1 +1 @@
		FROM ghcr.io/nanoframework/dev-container-all:v2.69
		FROM ghcr.io/nanoframework/dev-container-all:v2.70