diff --git a/windows/README.txt b/windows/README.txt
index 33f3e7a76bfe674a52e9cf9e5c667eaf05e31697..4bcdc04dc82ff6ea5a402d812984fc89be45457e 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 6.3.0 (MinGW, 64-bit),
+This version of Dynare is compiled for Octave 6.4.0 (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-6.3.0-w64-installer.exe
+  https://ftpmirror.gnu.org/gnu/octave/windows/octave-6.4.0-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 ‘4.x.y’ by
diff --git a/windows/deps/versions.mk b/windows/deps/versions.mk
index 669dc4dc67befbfbb84d84390558ec485163cdba..848ee1a008316bc7943f5d345b97b913afd56df4 100644
--- a/windows/deps/versions.mk
+++ b/windows/deps/versions.mk
@@ -1,7 +1,7 @@
 SLICOT_VERSION = 5.0+20101122
 X13AS_VERSION = 1.1_B39
 
-OCTAVE_VERSION = 6.3.0
+OCTAVE_VERSION = 6.4.0
 OCTAVE_W64_BUILD =
 
 MATLAB64_VERSION = 20200930
diff --git a/windows/dynare.nsi b/windows/dynare.nsi
index c85a3064abf1e811a7e9f326ded62bf111115447..311f6ca5f5b15f34774e109afbd7fcaf45df6f02 100644
--- a/windows/dynare.nsi
+++ b/windows/dynare.nsi
@@ -100,7 +100,7 @@ Section "MinGW compiler for MATLAB 64-bit"
  File /r deps\mingw64\*
 SectionEnd
 
-Section "MEX files for Octave 6.3.0 (64-bit)"
+Section "MEX files for Octave 6.4.0 (64-bit)"
  SetOutPath $INSTDIR\mex\octave\win64
  File ..\mex\octave\win64\*
 SectionEnd