diff --git a/windows/README.txt b/windows/README.txt
index df7207bba3ddfbcd31a6d6163b3fe3dd6a703e8b..d87ff3c8a03d230360521c65ef29633243bb012a 100644
--- a/windows/README.txt
+++ b/windows/README.txt
@@ -52,10 +52,10 @@ Using Dynare with Octave
 Dynare also works on top of GNU Octave, a free clone of MATLAB® (see
 <https://www.octave.org>).
 
-This version of Dynare is compiled for Octave 8.3.0 (MinGW, 64-bit),
+This version of Dynare is compiled for Octave 8.4.0 (MinGW, 64-bit),
 and may not work with other versions of Octave. The recommended version of
 Octave can be downloaded at:
-  https://ftpmirror.gnu.org/gnu/octave/windows/octave-8.3.0-w64-installer.exe
+  https://ftpmirror.gnu.org/gnu/octave/windows/octave-8.4.0-w64-installer.exe
 
 Every time you run Octave, you should type the following command (assuming that
 you have installed Dynare at the standard location, and replacing ‘x.y’ by
diff --git a/windows/deps/versions.mk b/windows/deps/versions.mk
index 92de003f192f58a73735511a354617bbcd00db44..a0a4032ae8d0e11b0eb4b8eb923ed6b29ef1cb5c 100644
--- a/windows/deps/versions.mk
+++ b/windows/deps/versions.mk
@@ -1,7 +1,7 @@
 SLICOT_VERSION = 5.0+20101122
 X13AS_VERSION = 1-1-b60
 
-OCTAVE_VERSION = 8.3.0
+OCTAVE_VERSION = 8.4.0
 OCTAVE_W64_BUILD =
 
 MATLAB64_VERSION = 20200930
diff --git a/windows/dynare.nsi b/windows/dynare.nsi
index c82bf63c9e6cafbe1006ef07e19622a6b2796aee..f3234fb20c430a0b86856a8c8a13801e27d38866 100644
--- a/windows/dynare.nsi
+++ b/windows/dynare.nsi
@@ -105,7 +105,7 @@ Section "MinGW compiler for MATLAB 64-bit"
  File /r deps\mingw64\*
 SectionEnd
 
-Section "MEX files for Octave 8.3.0 (64-bit)"
+Section "MEX files for Octave 8.4.0 (64-bit)"
  SetOutPath $INSTDIR\mex\octave\win64
  File ..\build-win-octave\*.mex
 SectionEnd