diff --git a/depends/install_imagequant.sh b/depends/install_imagequant.sh
index 8d62d5ac733..88756f8f9b9 100755
--- a/depends/install_imagequant.sh
+++ b/depends/install_imagequant.sh
@@ -2,7 +2,7 @@
 # install libimagequant
 
 archive_name=libimagequant
-archive_version=4.3.3
+archive_version=4.3.4
 
 archive=$archive_name-$archive_version
 
diff --git a/docs/installation/building-from-source.rst b/docs/installation/building-from-source.rst
index 03359de31cd..46a4c1245d1 100644
--- a/docs/installation/building-from-source.rst
+++ b/docs/installation/building-from-source.rst
@@ -64,7 +64,7 @@ Many of Pillow's features require external libraries:
 
 * **libimagequant** provides improved color quantization
 
-  * Pillow has been tested with libimagequant **2.6-4.3.3**
+  * Pillow has been tested with libimagequant **2.6-4.3.4**
   * Libimagequant is licensed GPLv3, which is more restrictive than
     the Pillow license, therefore we will not be distributing binaries
     with libimagequant support enabled.