diff --git a/installer/InnoSetup/ISCC.exe b/installer/InnoSetup/ISCC.exe
index 972df869fb..f461e37972 100755
Binary files a/installer/InnoSetup/ISCC.exe and b/installer/InnoSetup/ISCC.exe differ
diff --git a/installer/InnoSetup/ISCmplr.dll b/installer/InnoSetup/ISCmplr.dll
index 7dd1087c46..40379518ee 100644
Binary files a/installer/InnoSetup/ISCmplr.dll and b/installer/InnoSetup/ISCmplr.dll differ
diff --git a/installer/InnoSetup/ISPP.dll b/installer/InnoSetup/ISPP.dll
index d3ff975716..6eea424a55 100644
Binary files a/installer/InnoSetup/ISPP.dll and b/installer/InnoSetup/ISPP.dll differ
diff --git a/installer/InnoSetup/ISetup-dark.chm b/installer/InnoSetup/ISetup-dark.chm
index 983a44c62f..2aafeb376e 100644
Binary files a/installer/InnoSetup/ISetup-dark.chm and b/installer/InnoSetup/ISetup-dark.chm differ
diff --git a/installer/InnoSetup/ISetup.chm b/installer/InnoSetup/ISetup.chm
index 11d0674f43..4ef969b24f 100644
Binary files a/installer/InnoSetup/ISetup.chm and b/installer/InnoSetup/ISetup.chm differ
diff --git a/installer/InnoSetup/Languages/BrazilianPortuguese.isl b/installer/InnoSetup/Languages/BrazilianPortuguese.isl
index 40957533a9..ff51674c81 100644
--- a/installer/InnoSetup/Languages/BrazilianPortuguese.isl
+++ b/installer/InnoSetup/Languages/BrazilianPortuguese.isl
@@ -151,8 +151,8 @@ WizardSelectDir=Selecione o Local de Destino
 SelectDirDesc=Aonde o [name] deve ser instalado?
 SelectDirLabel3=O instalador instalará o [name] na seguinte pasta.
 SelectDirBrowseLabel=Pra continuar clique em Avançar. Se você gostaria de selecionar uma pasta diferente, clique em Procurar.
-DiskSpaceGBLabel=Pelo menos [gb] MBs de espaço livre em disco são requeridos.
-DiskSpaceMBLabel=Pelo menos [mb] MBs de espaço livre em disco são requeridos.
+DiskSpaceGBLabel=Pelo menos [gb] GB de espaço livre em disco são requeridos.
+DiskSpaceMBLabel=Pelo menos [mb] MB de espaço livre em disco são requeridos.
 CannotInstallToNetworkDrive=O instalador não pode instalar em um drive de rede.
 CannotInstallToUNCPath=O instalador não pode instalar em um caminho UNC.
 InvalidPath=Você deve inserir um caminho completo com a letra do drive; por exemplo:%n%nC:\APP%n%não um caminho UNC no formulário:%n%n\\server\share
@@ -179,8 +179,8 @@ NoUninstallWarningTitle=O Componente Existe
 NoUninstallWarning=O instalador detectou que os seguintes componentes já estão instalados no seu computador:%n%n%1%n%nNão selecionar estes componentes não desinstalará eles.%n%nVocê gostaria de continuar de qualquer maneira?
 ComponentSize1=%1 KBs
 ComponentSize2=%1 MBs
-ComponentsDiskSpaceGBLabel=A seleção atual requer pelo menos [gb] MBs de espaço em disco.
-ComponentsDiskSpaceMBLabel=A seleção atual requer pelo menos [mb] MBs de espaço em disco.
+ComponentsDiskSpaceGBLabel=A seleção atual requer pelo menos [gb] GB de espaço em disco.
+ComponentsDiskSpaceMBLabel=A seleção atual requer pelo menos [mb] MB de espaço em disco.
 
 ; *** "Select Additional Tasks" wizard page
 WizardSelectTasks=Selecionar Tarefas Adicionais
diff --git a/installer/InnoSetup/Languages/Catalan.isl b/installer/InnoSetup/Languages/Catalan.isl
index 1706364f16..109500f2b8 100644
--- a/installer/InnoSetup/Languages/Catalan.isl
+++ b/installer/InnoSetup/Languages/Catalan.isl
@@ -1,6 +1,7 @@
 ; *** Inno Setup version 6.4.0+ Catalan messages ***
 ;
-; Translated by Carles Millan (email: carles24@carlesmillan.cat)
+; Translated by Carles Millan (email: carles24@carlesmillan.cat) until 2025.
+; Translated by Artur Vicedo (email: artur@softcatala.org) since 2025.
 ;
 ; To download user-contributed translations of this file, go to:
 ;   https://jrsoftware.org/files/istrans/
diff --git a/installer/InnoSetup/Setup.e32 b/installer/InnoSetup/Setup.e32
index 4b7c85899f..a1d3544ca4 100644
Binary files a/installer/InnoSetup/Setup.e32 and b/installer/InnoSetup/Setup.e32 differ
diff --git a/installer/InnoSetup/SetupLdr.e32 b/installer/InnoSetup/SetupLdr.e32
index c734fe072f..f7b9ac863a 100644
Binary files a/installer/InnoSetup/SetupLdr.e32 and b/installer/InnoSetup/SetupLdr.e32 differ
diff --git a/installer/InnoSetup/islzma.dll b/installer/InnoSetup/islzma.dll
index 49573c7b6c..d160d73d77 100644
Binary files a/installer/InnoSetup/islzma.dll and b/installer/InnoSetup/islzma.dll differ
diff --git a/installer/InnoSetup/islzma32.exe b/installer/InnoSetup/islzma32.exe
index 2e9c890a61..31f65a1dda 100755
Binary files a/installer/InnoSetup/islzma32.exe and b/installer/InnoSetup/islzma32.exe differ
diff --git a/installer/InnoSetup/islzma64.exe b/installer/InnoSetup/islzma64.exe
index deb660c2d8..57c70ae691 100755
Binary files a/installer/InnoSetup/islzma64.exe and b/installer/InnoSetup/islzma64.exe differ
diff --git a/installer/InnoSetup/whatsnew.htm b/installer/InnoSetup/whatsnew.htm
index e475fac7bd..fce7763b62 100644
--- a/installer/InnoSetup/whatsnew.htm
+++ b/installer/InnoSetup/whatsnew.htm
@@ -29,6 +29,13 @@
 
 <p><b>Want to be notified by e-mail of new Inno Setup releases?</b> <a href="ismail.php">Subscribe</a> to the Inno Setup Mailing List!</p>
 
+<p><a name="6.4.2"></a><span class="ver">6.4.2 </span><span class="date">(2025-03-12)</span></p>
+<ul>
+  <li>Added <tt>[Setup]</tt> section directive <tt>CloseApplicationsFilterExcludes</tt>.</li>
+  <li>Inno Setup is now built using Delphi 12.1 Athens instead of Delphi 11.3 Alexandria.</li>
+  <li>Inno Setup is now signed using a new code signing certificate. The publisher name on this new certificate, Pyrsys B.V., is a company owned by Inno Setup co-developer Martijn Laan.</li>
+</ul>
+
 <p><a name="6.4.1"></a><span class="ver">6.4.1 </span><span class="date">(2025-02-12)</span></p>
 <p><span class="head2">Compiler IDE changes</span></p>
 <ul>