diff --git a/BUILDING_ON_WINDOWS.md b/BUILDING_ON_WINDOWS.md
index a075761f8..da19515ed 100644
--- a/BUILDING_ON_WINDOWS.md
+++ b/BUILDING_ON_WINDOWS.md
@@ -33,7 +33,7 @@ Note: This installation will take about 1.5 GB of disk space.
 
 ### For our websocket library, we need OpenSSL 1.1
 
-1. Download OpenSSL for windows, version `1.1.1k`: **[Download](https://slproweb.com/download/Win64OpenSSL-1_1_1k.exe)**
+1. Download OpenSSL for windows, version `1.1.1l`: **[Download](https://slproweb.com/download/Win64OpenSSL-1_1_1L.exe)**
 2. When prompted, install OpenSSL to `C:\local\openssl`
 3. When prompted, copy the OpenSSL DLLs to "The OpenSSL binaries (/bin) directory".