diff --git a/bin/baseset/openttd.grf b/bin/baseset/openttd.grf
index 554a330f53..aebde9bc78 100644
Binary files a/bin/baseset/openttd.grf and b/bin/baseset/openttd.grf differ
diff --git a/bin/baseset/orig_dos.obg b/bin/baseset/orig_dos.obg
index 72e5e52552..5e49a6cfa4 100644
--- a/bin/baseset/orig_dos.obg
+++ b/bin/baseset/orig_dos.obg
@@ -55,7 +55,7 @@ TRGI.GRF     = da6a6c9dcc451eec88d79211437b76a8
 TRGC.GRF     = ed446637e034104c5559b32c18afe78d
 TRGH.GRF     = ee6616fb0e6ef6b24892c58c93d86fc9
 TRGT.GRF     = e30e8a398ae86c03dc534a8ac7dfb3b6
-OPENTTD.GRF  = 891f2dc7c81346d8fd5fbf4cf42dc5bd
+OPENTTD.GRF  = c683a77e1a43aed7db29ef318b166dd9
 
 [origin]
 default      = You can find it on your Transport Tycoon Deluxe CD-ROM.
diff --git a/bin/baseset/orig_dos_de.obg b/bin/baseset/orig_dos_de.obg
index bfa7fe56c1..c14e089450 100644
--- a/bin/baseset/orig_dos_de.obg
+++ b/bin/baseset/orig_dos_de.obg
@@ -55,7 +55,7 @@ TRGI.GRF     = da6a6c9dcc451eec88d79211437b76a8
 TRGC.GRF     = ed446637e034104c5559b32c18afe78d
 TRGH.GRF     = ee6616fb0e6ef6b24892c58c93d86fc9
 TRGT.GRF     = fcde1d7e8a74197d72a62695884b909e
-OPENTTD.GRF  = 891f2dc7c81346d8fd5fbf4cf42dc5bd
+OPENTTD.GRF  = c683a77e1a43aed7db29ef318b166dd9
 
 [origin]
 default      = You can find it on your Transport Tycoon Deluxe CD-ROM.
diff --git a/bin/baseset/orig_win.obg b/bin/baseset/orig_win.obg
index 8edf60094a..c3febdda0a 100644
--- a/bin/baseset/orig_win.obg
+++ b/bin/baseset/orig_win.obg
@@ -55,7 +55,7 @@ TRGIR.GRF    = 0c2484ff6be49fc63a83be6ab5c38f32
 TRGCR.GRF    = 3668f410c761a050b5e7095a2b14879b
 TRGHR.GRF    = 06bf2b7a31766f048baac2ebe43457b1
 TRGTR.GRF    = de53650517fe661ceaa3138c6edb0eb8
-OPENTTD.GRF  = 891f2dc7c81346d8fd5fbf4cf42dc5bd
+OPENTTD.GRF  = c683a77e1a43aed7db29ef318b166dd9
 
 [origin]
 default      = You can find it on your Transport Tycoon Deluxe CD-ROM.
diff --git a/config.lib b/config.lib
index 6f215455aa..2ce1bba982 100644
--- a/config.lib
+++ b/config.lib
@@ -3169,9 +3169,9 @@ detect_grfcodec() {
 	log 2 "  returned $version"
 	log 2 "  exit code $ret"
 
-	if [ -z "$version" ] || [ "$ret" != "0" ] || [ "$version" -lt "913" ]; then
-		if [ -n "$version" ] && [ "$version" -lt "913" ]; then
-			log 1 "checking grfcodec... needs at least version 5.1.4 (r913), disabled"
+	if [ -z "$version" ] || [ "$ret" != "0" ] || [ "$version" -lt "949" ]; then
+		if [ -n "$version" ] && [ "$version" -lt "949" ]; then
+			log 1 "checking grfcodec... needs at least version 6.0.2 (r949), disabled"
 		else
 			log 1 "checking grfcodec... not found"
 		fi
@@ -3211,9 +3211,9 @@ detect_nforenum() {
 	log 2 "  returned $version"
 	log 2 "  exit code $ret"
 
-	if [ -z "$version" ] || [ "$ret" != "0" ] || [ "$version" -lt "913" ]; then
-		if [ -n "$version" ] && [ "$version" -lt "913" ]; then
-			log 1 "checking nforenum... needs at least version 5.1.4 (r913), disabled"
+	if [ -z "$version" ] || [ "$ret" != "0" ] || [ "$version" -lt "949" ]; then
+		if [ -n "$version" ] && [ "$version" -lt "949" ]; then
+			log 1 "checking nforenum... needs at least version 6.0.2 (r949), disabled"
 		else
 			log 1 "checking nforenum... not found"
 		fi