diff --git a/putty.h b/putty.h
index 15ec5b99..4b22c38e 100644
--- a/putty.h
+++ b/putty.h
@@ -31,6 +31,8 @@ typedef struct terminal_tag Terminal;
  * Fingerprints of the PGP master keys that can be used to establish a trust
  * path between an executable and other files.
  */
+#define PGP_MASTER_KEY_FP \
+    "440D E3B5 B7A1 CA85 B3CC  1718 AB58 5DC6 0467 6F7C"
 #define PGP_RSA_MASTER_KEY_FP \
     "8F 15 97 DA 25 30 AB 0D  88 D1 92 54 11 CF 0C 4C"
 #define PGP_DSA_MASTER_KEY_FP \
diff --git a/unix/uxmisc.c b/unix/uxmisc.c
index e6ad3906..2e13b3bb 100644
--- a/unix/uxmisc.c
+++ b/unix/uxmisc.c
@@ -163,9 +163,11 @@ void pgp_fingerprints(void)
 	  "one. See the manual for more information.\n"
 	  "(Note: these fingerprints have nothing to do with SSH!)\n"
 	  "\n"
-	  "PuTTY Master Key (RSA), 1024-bit:\n"
+	  "PuTTY Master Key as of 2015 (RSA, 4096-bit):\n"
+	  "  " PGP_MASTER_KEY_FP "\n\n"
+	  "Original PuTTY Master Key (RSA, 1024-bit):\n"
 	  "  " PGP_RSA_MASTER_KEY_FP "\n"
-	  "PuTTY Master Key (DSA), 1024-bit:\n"
+	  "Original PuTTY Master Key (DSA, 1024-bit):\n"
 	  "  " PGP_DSA_MASTER_KEY_FP "\n", stdout);
 }
 
diff --git a/windows/wincons.c b/windows/wincons.c
index b0ca5f2e..0b60e184 100644
--- a/windows/wincons.c
+++ b/windows/wincons.c
@@ -281,9 +281,11 @@ void pgp_fingerprints(void)
 	  "one. See the manual for more information.\n"
 	  "(Note: these fingerprints have nothing to do with SSH!)\n"
 	  "\n"
-	  "PuTTY Master Key (RSA), 1024-bit:\n"
+	  "PuTTY Master Key as of 2015 (RSA, 4096-bit):\n"
+	  "  " PGP_MASTER_KEY_FP "\n\n"
+	  "Original PuTTY Master Key (RSA, 1024-bit):\n"
 	  "  " PGP_RSA_MASTER_KEY_FP "\n"
-	  "PuTTY Master Key (DSA), 1024-bit:\n"
+	  "Original PuTTY Master Key (DSA, 1024-bit):\n"
 	  "  " PGP_DSA_MASTER_KEY_FP "\n", stdout);
 }
 
diff --git a/windows/winutils.c b/windows/winutils.c
index c81e7fe0..c49612e5 100644
--- a/windows/winutils.c
+++ b/windows/winutils.c
@@ -142,10 +142,12 @@ void pgp_fingerprints(void)
 		"one. See the manual for more information.\n"
 		"(Note: these fingerprints have nothing to do with SSH!)\n"
 		"\n"
-		"PuTTY Master Key (RSA), 1024-bit:\n"
-		"  " PGP_RSA_MASTER_KEY_FP "\n"
-		"PuTTY Master Key (DSA), 1024-bit:\n"
-		"  " PGP_DSA_MASTER_KEY_FP,
+                "PuTTY Master Key as of 2015 (RSA, 4096-bit):\n"
+                "  " PGP_MASTER_KEY_FP "\n\n"
+                "Original PuTTY Master Key (RSA, 1024-bit):\n"
+                "  " PGP_RSA_MASTER_KEY_FP "\n"
+                "Original PuTTY Master Key (DSA, 1024-bit):\n"
+                "  " PGP_DSA_MASTER_KEY_FP,
 		"PGP fingerprints", MB_ICONINFORMATION | MB_OK,
 		HELPCTXID(pgp_fingerprints));
 }