diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 1bce6f41b1c4c6afdecfd233f0a2d60c1da8a3b5..8541e9acfe19aec0898d9a9c0977eaba8a82355d 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,7 +1,7 @@
 variables:
   GIT_SUBMODULE_STRATEGY: recursive
   TERM: linux
-  MATLAB_VERSION: R2020a
+  MATLAB_VERSION: R2020b
   OLD_MATLAB_VERSION: R2009b
 
 # The next stanza creates the version number used for the source tarball and the
diff --git a/m4/ax_matlab_version.m4 b/m4/ax_matlab_version.m4
index a430f4481256eca3a2e5e453c05cb5e5dbf61878..f72bb39c458feb785589e2b6d0d41a1dc76a628d 100644
--- a/m4/ax_matlab_version.m4
+++ b/m4/ax_matlab_version.m4
@@ -1,4 +1,4 @@
-dnl Copyright © 2009-2019 Dynare Team
+dnl Copyright © 2009-2020 Dynare Team
 dnl
 dnl This file is part of Dynare.
 dnl
@@ -22,6 +22,9 @@ AC_REQUIRE([AX_MATLAB])
 AC_MSG_CHECKING([for MATLAB version])
 if test -n "$MATLAB_VERSION"; then
   case $MATLAB_VERSION in
+    *2020b | *2020B)
+      MATLAB_VERSION="9.9"
+      ;;
     *2020a | *2020A)
       MATLAB_VERSION="9.8"
       ;;
diff --git a/macOS/build.sh b/macOS/build.sh
index 9998514d8d5d3ade59547d6dc24ef2ac8eb94b59..dd696db5d8fa8aa3704d9a2d6ccc337753fce25b 100755
--- a/macOS/build.sh
+++ b/macOS/build.sh
@@ -89,7 +89,7 @@ NAME=dynare-"$VERSION"
 PKGFILES="$ROOTDIR"/macOS/pkg/"$NAME"
 mkdir -p \
       "$PKGFILES"/mex/matlab/maci64-7.9-9.3 \
-      "$PKGFILES"/mex/matlab/maci64-9.4-9.8 \
+      "$PKGFILES"/mex/matlab/maci64-9.4-9.9 \
       "$PKGFILES"/mex/octave \
       "$PKGFILES"/doc/dynare++ \
       "$PKGFILES"/dynare++ \
@@ -146,7 +146,7 @@ CC=$CC CXX=$CXX ./configure \
   --with-slicot="$LIB64"/Slicot/with-underscore \
   --with-matlab=/Applications/MATLAB_R2019b.app MATLAB_VERSION=R2019b
 make -j"$NTHREADS"
-cp -L  "$ROOTDIR"/mex/matlab/*                                       "$PKGFILES"/mex/matlab/maci64-9.4-9.8
+cp -L  "$ROOTDIR"/mex/matlab/*                                       "$PKGFILES"/mex/matlab/maci64-9.4-9.9
 
 
 ##
diff --git a/matlab/add_path_to_mex_files.m b/matlab/add_path_to_mex_files.m
index 85f2593030c39eb281f00e31036a3f885b4637d9..710909ee076f1f16499eaeea966ed94675066a74 100644
--- a/matlab/add_path_to_mex_files.m
+++ b/matlab/add_path_to_mex_files.m
@@ -73,7 +73,7 @@ else
                 end
             end
         else
-            tmp = [dynareroot '../mex/matlab/win64-9.4-9.8/'];
+            tmp = [dynareroot '../mex/matlab/win64-9.4-9.9/'];
             if exist(tmp, 'dir')
                 mexpath = tmp;
                 if modifypath
@@ -93,7 +93,7 @@ else
                 end
             end
         else
-            tmp = [dynareroot '../mex/matlab/maci64-9.4-9.8'];
+            tmp = [dynareroot '../mex/matlab/maci64-9.4-9.9'];
             if exist(tmp, 'dir')
                 mexpath = tmp;
                 if modifypath
diff --git a/windows/build.sh b/windows/build.sh
index b402d1c2d1c95362e8ef57a138a95d2edad37594..a9028f34f4ca37b105d8c87933a326b8d242676c 100755
--- a/windows/build.sh
+++ b/windows/build.sh
@@ -167,8 +167,8 @@ build_windows_matlab_mex_64_b ()
 		     PACKAGE_STRING="dynare $VERSION"
     make -j"$NTHREADS" all
     x86_64-w64-mingw32-strip -- **/*.mexw64
-    mkdir -p "$ROOT_DIRECTORY"/../mex/matlab/win64-9.4-9.8
-    mv -- **/*.mexw64 "$ROOT_DIRECTORY"/../mex/matlab/win64-9.4-9.8
+    mkdir -p "$ROOT_DIRECTORY"/../mex/matlab/win64-9.4-9.9
+    mv -- **/*.mexw64 "$ROOT_DIRECTORY"/../mex/matlab/win64-9.4-9.9
 }
 
 # Create Windows DLL binaries for Octave/MinGW (32bit)
diff --git a/windows/dynare.nsi b/windows/dynare.nsi
index 04a4278b64e58f8487c566722f05a88910263484..8d808db8a4cffd63e712615044a7915ce042786c 100644
--- a/windows/dynare.nsi
+++ b/windows/dynare.nsi
@@ -96,9 +96,9 @@ Section "MEX files for MATLAB 64-bit, version 7.9 to 9.3 (R2009b to R2017b)"
  File ..\mex\matlab\win64-7.9-9.3\*.mexw64
 SectionEnd
 
-Section "MEX files for MATLAB 64-bit, version 9.4 to 9.8 (R2018a to R2020a)"
- SetOutPath $INSTDIR\mex\matlab\win64-9.4-9.8
- File ..\mex\matlab\win64-9.4-9.8\*.mexw64
+Section "MEX files for MATLAB 64-bit, version 9.4 to 9.9 (R2018a to R2020b)"
+ SetOutPath $INSTDIR\mex\matlab\win64-9.4-9.9
+ File ..\mex\matlab\win64-9.4-9.9\*.mexw64
 SectionEnd
 
 Section "MEX files for Octave 5.2.0 (64-bit)"