diff --git a/installer/mosquitto.nsi b/installer/mosquitto.nsi
index c3fb7c94..11310589 100644
--- a/installer/mosquitto.nsi
+++ b/installer/mosquitto.nsi
@@ -61,8 +61,8 @@ Section "Files" SecInstall
 	File "..\README-windows.txt"
 	File "..\README-letsencrypt.md"
 	File "..\SECURITY.md"
-	File "C:\OpenSSL-Win32\bin\libssl-1_1.dll"
-	File "C:\OpenSSL-Win32\bin\libcrypto-1_1.dll"
+	File "C:\OpenSSL-Win32\bin\libssl-3.dll"
+	File "C:\OpenSSL-Win32\bin\libcrypto-3.dll"
 	File "..\edl-v10"
 	File "..\epl-v20"
 
@@ -122,8 +122,8 @@ Section "Uninstall"
 	Delete "$INSTDIR\README-windows.txt"
 	Delete "$INSTDIR\README-letsencrypt.md"
 	Delete "$INSTDIR\SECURITY.md"
-	Delete "$INSTDIR\libssl-1_1.dll"
-	Delete "$INSTDIR\libcrypto-1_1.dll"
+	Delete "$INSTDIR\libssl-3.dll"
+	Delete "$INSTDIR\libcrypto-3.dll"
 	Delete "$INSTDIR\edl-v10"
 	Delete "$INSTDIR\epl-v20"
 
diff --git a/installer/mosquitto64.nsi b/installer/mosquitto64.nsi
index 50f473da..50be9213 100644
--- a/installer/mosquitto64.nsi
+++ b/installer/mosquitto64.nsi
@@ -62,8 +62,8 @@ Section "Files" SecInstall
 	File "..\README-windows.txt"
 	File "..\README-letsencrypt.md"
 	File "..\SECURITY.md"
-	File "C:\OpenSSL-Win64\bin\libssl-1_1-x64.dll"
-	File "C:\OpenSSL-Win64\bin\libcrypto-1_1-x64.dll"
+	File "C:\OpenSSL-Win64\bin\libssl-3-x64.dll"
+	File "C:\OpenSSL-Win64\bin\libcrypto-3-x64.dll"
 	File "..\edl-v10"
 	File "..\epl-v20"
 
@@ -123,8 +123,8 @@ Section "Uninstall"
 	Delete "$INSTDIR\README-windows.txt"
 	Delete "$INSTDIR\README-letsencrypt.md"
 	Delete "$INSTDIR\SECURITY.md"
-	Delete "$INSTDIR\libssl-1_1-x64.dll"
-	Delete "$INSTDIR\libcrypto-1_1-x64.dll"
+	Delete "$INSTDIR\libssl-3-x64.dll"
+	Delete "$INSTDIR\libcrypto-3-x64.dll"
 	Delete "$INSTDIR\edl-v10"
 	Delete "$INSTDIR\epl-v20"