diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index c3f535c..daee792 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -62,13 +62,13 @@ jobs:
         if: runner.os=='Windows'
         run: |
           cd external/Texconv-Custom-DLL/batch_files
-          ./build_dds_full_support.bat
+          ./build_small.bat
       
       - name: build shared library (for Unix)
         if: runner.os!='Windows'
         run: |
           cd external/Texconv-Custom-DLL/shell_scripts
-          bash build_dds_full_support.sh
+          bash build_small.sh
 
       - name: Copy files
         run: |
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index c4de63c..f02276e 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -77,13 +77,13 @@ jobs:
       - name: build dll (for Windows)
         if: runner.os=='Windows'
         run: |
-          external/Texconv-Custom-DLL/batch_files/build_dds_full_support.bat
+          external/Texconv-Custom-DLL/batch_files/build_small.bat
           cp external/Texconv-Custom-DLL/texconv.dll addons/blender_dds_addon/directx
       
       - name: build shared library (for Unix)
         if: runner.os!='Windows'
         run: |
-          bash external/Texconv-Custom-DLL/shell_scripts/build_dds_full_support.sh
+          bash external/Texconv-Custom-DLL/shell_scripts/build_small.sh
           cp external/Texconv-Custom-DLL/libtexconv.* addons/blender_dds_addon/directx
       
       - name: Set up Python v${{ matrix.python-version }}
diff --git a/changelog.txt b/changelog.txt
index 27a33b4..fac75c9 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -2,6 +2,7 @@ ver 0.2.0
 - Added "Import from a Directory" operation
 - Added "Export All Images" operation
 - Added custom properties to store meta data
+- Updated texconv to fix a bug that cubemap images will be written on non-zeroed buffers
 - Refined codes
 
 ver 0.1.3
diff --git a/docs/How-To-Build.md b/docs/How-To-Build.md
index 68928ea..ec79766 100644
--- a/docs/How-To-Build.md
+++ b/docs/How-To-Build.md
@@ -41,13 +41,13 @@ It'll download the file and place it in a proper location.
 ### for Windows
 
 Move to `./Blender-DDS-Addon/external/Texconv-Custom-DLL/batch_files`.  
-Then, type `build_dds_full_support.bat`.  
+Then, type `build_small.bat`.  
 `texconv.dll` will be generated in `./Blender-DDS-Addon/external/Texconv-Custom-DLL/`  
 
 ### for Unix
 
 Move to `./Blender-DDS-Addon/external/Texconv-Custom-DLL/shell_scripts`.  
-Then, type `bash build_dds_full_support.sh`.  
+Then, type `bash build_small.sh`.  
 `libtexconv.so` (or `libtexconv.dylib`) will be generated in `./Blender-DDS-Addon/external/Texconv-Custom-DLL/`  
 
 ## 4. Copy Texconv
diff --git a/external/Texconv-Custom-DLL b/external/Texconv-Custom-DLL
index 69c7a2c..01d5f1b 160000
--- a/external/Texconv-Custom-DLL
+++ b/external/Texconv-Custom-DLL
@@ -1 +1 @@
-Subproject commit 69c7a2cb408e744ccbd830b297970dd3454eca87
+Subproject commit 01d5f1bf5f38d03ec6439e7f2c149b7db3c79f03