diff --git a/binaries/windows/glm_3.3.1b1.zip b/binaries/windows/glm_3.3.1b1.zip
new file mode 100644
index 0000000..2b7cefb
Binary files /dev/null and b/binaries/windows/glm_3.3.1b1.zip differ
diff --git a/binaries/windows/glm_latest/ReleaseInfo.txt b/binaries/windows/glm_latest/ReleaseInfo.txt
index e22e57e..49896c7 100644
--- a/binaries/windows/glm_latest/ReleaseInfo.txt
+++ b/binaries/windows/glm_latest/ReleaseInfo.txt
@@ -1,12 +1,12 @@
 This build is produced from the following git points :
 
-cc497b8 GLM.git
-cc497b8 GLM.git
-30804d0 libplot.git
-9bb9eea libutil.git
-2ca6e8f libaed-water.git
-134c3a7 libaed-benthic.git
-4742d67 libaed-demo.git
+4256df0 GLM.git
+4256df0 GLM.git
+1fc78db libplot.git
+0802dd2 libutil.git
+5bef2bc libaed-water.git
+2790e4a libaed-benthic.git
+c95ca3b libaed-demo.git
 45e9d95 libaed2.git
 
 The plus version also has :
diff --git a/binaries/windows/glm_latest/VERSION b/binaries/windows/glm_latest/VERSION
index e8e097e..99229fe 100644
--- a/binaries/windows/glm_latest/VERSION
+++ b/binaries/windows/glm_latest/VERSION
@@ -1 +1 @@
-glm_3.3.1a12
+glm_3.3.1b1
diff --git a/binaries/windows/glm_latest/glm.exe b/binaries/windows/glm_latest/glm.exe
index 0f8a462..608e07b 100644
Binary files a/binaries/windows/glm_latest/glm.exe and b/binaries/windows/glm_latest/glm.exe differ
diff --git a/binaries/windows/glm_latest/libgd.dll b/binaries/windows/glm_latest/libgd.dll
index 40d2a33..157b78d 100644
Binary files a/binaries/windows/glm_latest/libgd.dll and b/binaries/windows/glm_latest/libgd.dll differ
diff --git a/binaries/windows/glm_latest/libnetcdf.dll b/binaries/windows/glm_latest/libnetcdf.dll
index 51a312f..db5b312 100644
Binary files a/binaries/windows/glm_latest/libnetcdf.dll and b/binaries/windows/glm_latest/libnetcdf.dll differ