diff --git a/pkg/flashdb/Makefile b/pkg/flashdb/Makefile
index 8782ee26204d7..904e8ce1bd281 100644
--- a/pkg/flashdb/Makefile
+++ b/pkg/flashdb/Makefile
@@ -1,7 +1,7 @@
 PKG_NAME=flashdb
 PKG_URL=https://github.com/armink/FlashDB.git
-# 1.1.2
-PKG_VERSION=7062902a3e7b6b8a7e8f5886ae242271a0164e05
+# 2.0.0
+PKG_VERSION=4e5677408256f82d47cd56a6b04605dcee35ed9a
 PKG_LICENSE=Apache-2.0
 
 include $(RIOTBASE)/pkg/pkg.mk
@@ -11,6 +11,8 @@ CFLAGS += -Wno-cast-align
 CFLAGS += -Wno-unused
 CFLAGS += -Wno-unused-parameter
 CFLAGS += -Wno-format
+# can be dropped if #226 is merged
+CFLAGS += -Wno-sign-compare
 
 .PHONY: flashdb_fal
 
diff --git a/pkg/flashdb/Makefile.dep b/pkg/flashdb/Makefile.dep
index 7538c7dee4e19..98f771e1a2cd8 100644
--- a/pkg/flashdb/Makefile.dep
+++ b/pkg/flashdb/Makefile.dep
@@ -1,5 +1,6 @@
 # FlashDB is only supported by 32 bit architectures
 FEATURES_REQUIRED += arch_32bit
+CFLAGS += -DFDB_USING_NATIVE_ASSERT
 
 ifneq (,$(filter flashdb_tsdb,$(USEMODULE)))
   CFLAGS += -DFDB_USING_TSDB
diff --git a/pkg/flashdb/patches/0002-port-fal-add-option-to-use-native-assert.patch b/pkg/flashdb/patches/0002-port-fal-add-option-to-use-native-assert.patch
new file mode 100644
index 0000000000000..aff1225be9108
--- /dev/null
+++ b/pkg/flashdb/patches/0002-port-fal-add-option-to-use-native-assert.patch
@@ -0,0 +1,55 @@
+From 4daeb0a609e6b5bfea608900576109e8d4fa604c Mon Sep 17 00:00:00 2001
+From: Benjamin Valentin <benjamin.valentin@ml-pa.com>
+Date: Mon, 7 Aug 2023 17:23:48 +0200
+Subject: [PATCH] [port/fal] add option to use native assert()
+
+---
+ port/fal/inc/fal_def.h | 7 +++++++
+ 1 file changed, 7 insertions(+)
+
+diff --git a/port/fal/inc/fal_def.h b/port/fal/inc/fal_def.h
+index f558598..de8aada 100644
+--- a/port/fal/inc/fal_def.h
++++ b/port/fal/inc/fal_def.h
+@@ -13,6 +13,9 @@
+ 
+ #include <stdint.h>
+ #include <stdio.h>
++#ifdef FDB_USING_NATIVE_ASSERT
++#include <assert.h>
++#endif
+ 
+ #define FAL_SW_VERSION                 "0.5.99"
+ 
+@@ -50,6 +53,7 @@
+ #endif
+ 
+ #if FAL_DEBUG
++#ifndef FDB_USING_NATIVE_ASSERT
+ #ifdef assert
+ #undef assert
+ #endif
+@@ -59,6 +63,7 @@ if (!(EXPR))                                                                   \
+     FAL_PRINTF("(%s) has assert failed at %s.\n", #EXPR, __func__ );        \
+     while (1);                                                                 \
+ }
++#endif
+ 
+ /* debug level log */
+ #ifdef  log_d
+@@ -69,10 +74,12 @@ if (!(EXPR))                                                                   \
+ 
+ #else
+ 
++#ifndef FDB_USING_NATIVE_ASSERT
+ #ifdef assert
+ #undef assert
+ #endif
+ #define assert(EXPR)                   ((void)0);
++#endif
+ 
+ /* debug level log */
+ #ifdef  log_d
+-- 
+2.39.2
+
diff --git a/pkg/flashdb/patches/0002-remove-assert-definition.patch b/pkg/flashdb/patches/0002-remove-assert-definition.patch
deleted file mode 100644
index 2cae1d41a8574..0000000000000
--- a/pkg/flashdb/patches/0002-remove-assert-definition.patch
+++ /dev/null
@@ -1,52 +0,0 @@
-From 8c798a4fb33dbafec6a05735537f77e281bf11db Mon Sep 17 00:00:00 2001
-From: Benjamin Valentin <benjamin.valentin@ml-pa.com>
-Date: Wed, 2 Feb 2022 22:03:41 +0100
-Subject: [PATCH] remove assert() definition
-
----
- port/fal/inc/fal_def.h | 15 +--------------
- 1 file changed, 1 insertion(+), 14 deletions(-)
-
-diff --git a/port/fal/inc/fal_def.h b/port/fal/inc/fal_def.h
-index f432c26..6ba206b 100644
---- a/port/fal/inc/fal_def.h
-+++ b/port/fal/inc/fal_def.h
-@@ -25,6 +25,7 @@
- #ifndef _FAL_DEF_H_
- #define _FAL_DEF_H_
- 
-+#include <assert.h>
- #include <stdint.h>
- #include <stdio.h>
- 
-@@ -64,15 +65,6 @@
- #endif
- 
- #if FAL_DEBUG
--#ifdef assert
--#undef assert
--#endif
--#define assert(EXPR)                                                           \
--if (!(EXPR))                                                                   \
--{                                                                              \
--    FAL_PRINTF("(%s) has assert failed at %s.\n", #EXPR, __FUNCTION__);        \
--    while (1);                                                                 \
--}
- 
- /* debug level log */
- #ifdef  log_d
-@@ -82,11 +74,6 @@ if (!(EXPR))                                                                   \
- 
- #else
- 
--#ifdef assert
--#undef assert
--#endif
--#define assert(EXPR)                   ((void)0);
--
- /* debug level log */
- #ifdef  log_d
- #undef  log_d
--- 
-2.32.0
-