diff --git a/BUILD.md b/BUILD.md
index b90e2df..ba70ecb 100644
--- a/BUILD.md
+++ b/BUILD.md
@@ -97,6 +97,12 @@ Build the latest container:
 python3 ./install/common/build-image.py
 ```
 
+Download the OCR language data:
+
+```sh
+python3 ./install/common/download-tessdata.py
+```
+
 Run from source tree:
 
 ```sh
@@ -152,6 +158,12 @@ Build the latest container:
 python3 ./install/common/build-image.py
 ```
 
+Download the OCR language data:
+
+```sh
+python3 ./install/common/download-tessdata.py
+```
+
 Run from source tree:
 
 ```sh
@@ -357,6 +369,12 @@ Build the dangerzone container image:
 python3 ./install/common/build-image.py
 ```
 
+Download the OCR language data:
+
+```sh
+python3 ./install/common/download-tessdata.py
+```
+
 Run from source tree:
 
 ```sh
@@ -418,6 +436,13 @@ Build the dangerzone container image:
 python3 .\install\common\build-image.py
 ```
 
+Download the OCR language data:
+
+```sh
+python3 .\install\common\download-tessdata.py
+```
+
+
 After that you can launch dangerzone during development with:
 
 ```