diff --git a/lang/eisl/Makefile b/lang/eisl/Makefile
index 298b7d4cce65..cf0df1530df4 100644
--- a/lang/eisl/Makefile
+++ b/lang/eisl/Makefile
@@ -1,54 +1,54 @@
 PORTNAME=	eisl
 DISTVERSIONPREFIX=	v
-DISTVERSION=	5.55
+DISTVERSION=	5.59
 CATEGORIES=	lang devel
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	Interpreter and compiler compatible with ISLisp standard
 WWW=		https://github.com/sasagawa888/eisl
 
 LICENSE=	BSD2CLAUSE
 LICENSE_FILE=	${WRKSRC}/license.txt
 
 BROKEN_armv7=	stage breaks: Abort trap (likely due to the memory allocation problem)
 BROKEN_i386=	stage breaks: data segment of more than 500GB is required, see https://github.com/sasagawa888/eisl/issues/218
 
 TEST_DEPENDS=	cppcheck:devel/cppcheck
 
 USES=		gmake gl localbase:ldflags ncurses:port tcl # port because tests need ncurses6-config
 USE_GL=		gl glu glut
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	sasagawa888
 
 ALL_TARGET=	${PORTNAME}
 TEST_TARGET=	check # tests print some errors and warnings, see https://github.com/sasagawa888/eisl/issues/181#issuecomment-1195147029
 
 MAKEFILE=	makefile
 
 CFLAGS+=	-D__BSD_VISIBLE # w/out this there's error: use of undeclared identifier '_SC_NPROCESSORS_CONF'
 CFLAGS+=	-I${TCL_INCLUDEDIR}
 LDFLAGS+=	-lncursesw
 
 .include <bsd.port.options.mk>
 
 .if ${ARCH} == riscv64
 EXTRA_PATCHES=	${FILESDIR}/extra-patch-makefile
 .endif
 
 .include <bsd.port.pre.mk>
 
 .if ${OPSYS} == FreeBSD
 CFLAGS+=	-Wno-error=int-conversion
 .endif
 
 .if ${OPSYS} == FreeBSD
 CFLAGS+=	-Wno-error=incompatible-function-pointer-types
 .endif
 
 post-install:
 	${STRIP_CMD} \
 		${STAGEDIR}${PREFIX}/bin/eisl \
 		${STAGEDIR}${PREFIX}/bin/edlis
 
 .include <bsd.port.post.mk>
diff --git a/lang/eisl/distinfo b/lang/eisl/distinfo
index c3c6708e7bf5..34164a0cf753 100644
--- a/lang/eisl/distinfo
+++ b/lang/eisl/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1759296788
-SHA256 (sasagawa888-eisl-v5.55_GH0.tar.gz) = 23fdd1cf5e667768a89e1fdddc950b853bc4285fca08457b0dc0d16ebaae748c
-SIZE (sasagawa888-eisl-v5.55_GH0.tar.gz) = 1800427
+TIMESTAMP = 1763915853
+SHA256 (sasagawa888-eisl-v5.59_GH0.tar.gz) = 703a5abeb668359f8aa913168ff1c3882795a880d158f310e4993a1f10d70368
+SIZE (sasagawa888-eisl-v5.59_GH0.tar.gz) = 3116593
diff --git a/lang/eisl/files/patch-extension.c b/lang/eisl/files/patch-extension.c
new file mode 100644
index 000000000000..de091c6b67fd
--- /dev/null
+++ b/lang/eisl/files/patch-extension.c
@@ -0,0 +1,40 @@
+--- extension.c.orig	2025-11-23 16:41:16 UTC
++++ extension.c
+@@ -20,8 +20,6 @@
+ #include <pthread.h>
+ #include <sys/time.h>
+ #include <sys/mman.h>
+-#include <linux/fb.h>
+-#include <linux/fb.h>
+ #include <sys/ioctl.h>
+ 
+ 
+@@ -131,6 +129,7 @@ void init_exsubr(void)
+     def_subr("RECV-SOCKET", f_recv_socket);
+     def_subr("CLOSE-SOCKET", f_close_socket);
+ 
++#if 0
+     def_subr("GR-OPEN", f_gr_open);
+     def_subr("GR-CLOSE", f_gr_close);
+     def_subr("GR-CLS", f_gr_cls);
+@@ -138,6 +137,7 @@ void init_exsubr(void)
+     def_subr("GR-CIRCLE", f_gr_circle);
+     def_subr("GR-RECT", f_gr_rect);
+     def_subr("GR-LINE", f_gr_line);
++#endif
+ 
+ #ifdef __rpi__
+     def_subr("WIRINGPI-SETUP-GPIO", f_wiringpi_setup_gpio);
+@@ -1891,6 +1891,7 @@ int f_close_socket(int arglist, int th)
+ }
+ 
+ 
++# if 0
+ //-------/dev/fb0------------------------
+ 
+ #define BLACK       0x000000  
+@@ -2201,3 +2202,4 @@ int f_gr_line(int arglist, int th)
+     fb_draw_line(GET_INT(arg1),GET_INT(arg2),GET_INT(arg3),GET_INT(arg4),color_to_number(arg5));
+     return(T);
+ }
++#endif
diff --git a/lang/eisl/files/patch-ffi.h b/lang/eisl/files/patch-ffi.h
index efd446611808..1b76ce9b70fa 100644
--- a/lang/eisl/files/patch-ffi.h
+++ b/lang/eisl/files/patch-ffi.h
@@ -1,11 +1,11 @@
---- ffi.h.orig	2024-04-30 07:10:18 UTC
+--- ffi.h.orig	2025-11-23 16:45:45 UTC
 +++ ffi.h
 @@ -4,7 +4,7 @@
  
  #ifndef FFI_H
  #define FFI_H
 -#define CELLSIZE 20000000
 +#define CELLSIZE 10000000
- // TCC does not have support for "static conts" as compile time constant
- #ifdef __TINYC__
- #define NIL 0
+ static const int NIL = 0;
+ static const int T = 2;
+ static const int SMALL_INT_MAX = 1000000000;