diff --git a/.github/workflows/release.json b/.github/workflows/release.json
index 0dab922..71d8bce 100644
--- a/.github/workflows/release.json
+++ b/.github/workflows/release.json
@@ -7,7 +7,7 @@
     },
     "jobs": {
         "release": {
-            "name": "Release: ${{github.ref_name}}",
+            "name": "release: ${{github.ref_name}}",
             "runs-on": "ubuntu-latest",
             "steps": [{
                 "name": "clone repository",
diff --git a/.github/workflows/release.yaml b/.github/workflows/release.yaml
index 905db04..93d83d6 100644
--- a/.github/workflows/release.yaml
+++ b/.github/workflows/release.yaml
@@ -4,7 +4,7 @@ on:
         tags: v[0-9]+.[0-9]+.[0-9]+
 jobs:
     release:
-        name: 'Release: ${{github.ref_name}}'
+        name: 'release: ${{github.ref_name}}'
         runs-on: ubuntu-latest
         steps:
             - name: clone repository
diff --git a/.github/workflows/test.json b/.github/workflows/test.json
index bb23b94..455116e 100644
--- a/.github/workflows/test.json
+++ b/.github/workflows/test.json
@@ -24,7 +24,7 @@
     },
     "jobs": {
         "test": {
-            "name": "Test: ${{matrix.board.name}}",
+            "name": "test: ${{matrix.board.name}}",
             "runs-on": "ubuntu-latest",
             "strategy": {
                 "fail-fast": true,
@@ -37,6 +37,10 @@
                         "vendor": "adafruit",
                         "arch": "samd",
                         "name": "adafruit_trinket_m0"
+                    }, {
+                        "vendor": "STMicroelectronics",
+                        "arch": "stm32",
+                        "name": "GenH5"
                     }, {
                         "vendor": "teensy",
                         "arch": "avr",
@@ -52,6 +56,11 @@
                         "board": {
                             "vendor": "adafruit"
                         }
+                    }, {
+                        "index": "https://github.com/stm32duino/BoardManagerFiles/raw/main/package_stmicroelectronics_index.json",
+                        "board": {
+                            "vendor": "STMicroelectronics"
+                        }
                     }, {
                         "index": "https://www.pjrc.com/teensy/package_teensy_index.json",
                         "board": {
diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index de841c1..c2e8ad4 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -16,7 +16,7 @@ on:
             - '*.properties'
 jobs:
     test:
-        name: 'Test: ${{matrix.board.name}}'
+        name: 'test: ${{matrix.board.name}}'
         runs-on: ubuntu-latest
         strategy:
             fail-fast: true
@@ -28,6 +28,9 @@ jobs:
                     - vendor: adafruit
                       arch: samd
                       name: adafruit_trinket_m0
+                    - vendor: STMicroelectronics
+                      arch: stm32
+                      name: GenH5
                     - vendor: teensy
                       arch: avr
                       name: teensy41
@@ -38,6 +41,9 @@ jobs:
                     - index: https://adafruit.github.io/arduino-board-index/package_adafruit_index.json
                       board:
                         vendor: adafruit
+                    - index: https://github.com/stm32duino/BoardManagerFiles/raw/main/package_stmicroelectronics_index.json
+                      board:
+                        vendor: STMicroelectronics
                     - index: https://www.pjrc.com/teensy/package_teensy_index.json
                       board:
                         vendor: teensy
diff --git a/library.properties b/library.properties
index 86d078f..5659a28 100644
--- a/library.properties
+++ b/library.properties
@@ -1,6 +1,6 @@
 name=base64_encode
 author=dojyorin
-version=2.0.2
+version=2.0.3
 architectures=*
 includes=arduino_base64.hpp
 sentence=Convert between binary and base64 encoded string.