diff --git a/cabal.project b/cabal.project
index 0c6105ab2..780703f01 100644
--- a/cabal.project
+++ b/cabal.project
@@ -12,7 +12,7 @@ constraints: zip +disable-bzip2 +disable-zstd
 source-repository-package
     type: git
     location: https://github.com/simplex-chat/simplexmq.git
-    tag: 7a0cd8041bbb7d7ab2f089395a244dc4af0f9e3b
+    tag: a516c2f72c81bb4a433c4065b1b5aa484b8292b1
 
 source-repository-package
     type: git
diff --git a/libsimplex.dll.def b/libsimplex.dll.def
index f927e3ee2..592e6db4f 100644
--- a/libsimplex.dll.def
+++ b/libsimplex.dll.def
@@ -12,6 +12,7 @@ EXPORTS
     chat_parse_server
     chat_password_hash
     chat_valid_name
+    chat_json_length
     chat_encrypt_media
     chat_decrypt_media
     chat_write_file
diff --git a/package.yaml b/package.yaml
index 59d52b6f6..afbd93629 100644
--- a/package.yaml
+++ b/package.yaml
@@ -1,5 +1,5 @@
 name: simplex-chat
-version: 5.5.1.0
+version: 5.5.2.0
 #synopsis:
 #description:
 homepage: https://github.com/simplex-chat/simplex-chat#readme
diff --git a/scripts/desktop/build-lib-linux.sh b/scripts/desktop/build-lib-linux.sh
index d40fb0462..c8b2079bb 100755
--- a/scripts/desktop/build-lib-linux.sh
+++ b/scripts/desktop/build-lib-linux.sh
@@ -20,6 +20,10 @@ root_dir="$(dirname "$(dirname "$(readlink "$0")")")"
 cd $root_dir
 BUILD_DIR=dist-newstyle/build/$ARCH-$OS/ghc-${GHC_VERSION}/simplex-chat-*
 
+exports=( $(sed 's/foreign export ccall "chat_migrate_init_key"//' src/Simplex/Chat/Mobile.hs | sed 's/foreign export ccall "chat_reopen_store"//' |grep "foreign export ccall" | cut -d '"' -f2) )
+for elem in "${exports[@]}"; do count=$(grep -R "$elem$" libsimplex.dll.def | wc -l); if [ $count -ne 1 ]; then echo Wrong exports in libsimplex.dll.def. Add \"$elem\" to that file; exit 1; fi ; done
+for elem in "${exports[@]}"; do count=$(grep -R "\"$elem\"" flake.nix | wc -l); if [ $count -ne 2 ]; then echo Wrong exports in flake.nix. Add \"$elem\" in two places of the file; exit 1; fi ; done
+
 rm -rf $BUILD_DIR
 cabal build lib:simplex-chat --ghc-options='-optl-Wl,-rpath,$ORIGIN' --ghc-options="-optl-L$(ghc --print-libdir)/rts -optl-Wl,--as-needed,-lHSrts_thr-ghc$GHC_VERSION"
 cd $BUILD_DIR/build
diff --git a/scripts/desktop/build-lib-mac.sh b/scripts/desktop/build-lib-mac.sh
index f8c27d200..e9fffbd38 100755
--- a/scripts/desktop/build-lib-mac.sh
+++ b/scripts/desktop/build-lib-mac.sh
@@ -18,6 +18,10 @@ GHC_LIBS_DIR=$(ghc --print-libdir)
 
 BUILD_DIR=dist-newstyle/build/$ARCH-*/ghc-*/simplex-chat-*
 
+exports=( $(sed 's/foreign export ccall "chat_migrate_init_key"//' src/Simplex/Chat/Mobile.hs | sed 's/foreign export ccall "chat_reopen_store"//' |grep "foreign export ccall" | cut -d '"' -f2) )
+for elem in "${exports[@]}"; do count=$(grep -R "$elem$" libsimplex.dll.def | wc -l); if [ $count -ne 1 ]; then echo Wrong exports in libsimplex.dll.def. Add \"$elem\" to that file; exit 1; fi ; done
+for elem in "${exports[@]}"; do count=$(grep -R "\"$elem\"" flake.nix | wc -l); if [ $count -ne 2 ]; then echo Wrong exports in flake.nix. Add \"$elem\" in two places of the file; exit 1; fi ; done
+
 rm -rf $BUILD_DIR
 cabal build lib:simplex-chat lib:simplex-chat --ghc-options="-optl-Wl,-rpath,@loader_path -optl-Wl,-L$GHC_LIBS_DIR/rts -optl-lHSrts_thr-ghc8.10.7 -optl-lffi"
 
diff --git a/scripts/desktop/build-lib-windows.sh b/scripts/desktop/build-lib-windows.sh
index bd2cdc1c2..72de53854 100755
--- a/scripts/desktop/build-lib-windows.sh
+++ b/scripts/desktop/build-lib-windows.sh
@@ -17,6 +17,10 @@ fi
 
 BUILD_DIR=dist-newstyle/build/$ARCH-$OS/ghc-*/simplex-chat-*
 
+exports=( $(sed 's/foreign export ccall "chat_migrate_init_key"//' src/Simplex/Chat/Mobile.hs | sed 's/foreign export ccall "chat_reopen_store"//' |grep "foreign export ccall" | cut -d '"' -f2) )
+for elem in "${exports[@]}"; do count=$(grep -R "$elem$" libsimplex.dll.def | wc -l); if [ $count -ne 1 ]; then echo Wrong exports in libsimplex.dll.def. Add \"$elem\" to that file; exit 1; fi ; done
+for elem in "${exports[@]}"; do count=$(grep -R "\"$elem\"" flake.nix | wc -l); if [ $count -ne 2 ]; then echo Wrong exports in flake.nix. Add \"$elem\" in two places of the file; exit 1; fi ; done
+
 # IMPORTANT: in order to get a working build you should use x86_64 MinGW with make, cmake, gcc.
 # 100% working MinGW is https://github.com/brechtsanders/winlibs_mingw/releases/download/13.1.0-16.0.5-11.0.0-ucrt-r5/winlibs-x86_64-posix-seh-gcc-13.1.0-mingw-w64ucrt-11.0.0-r5.zip
 # Many other distributions I tested don't work in some cases or don't have required tools.
diff --git a/scripts/nix/sha256map.nix b/scripts/nix/sha256map.nix
index 53bd19a36..042c455b0 100644
--- a/scripts/nix/sha256map.nix
+++ b/scripts/nix/sha256map.nix
@@ -1,5 +1,5 @@
 {
-  "https://github.com/simplex-chat/simplexmq.git"."7a0cd8041bbb7d7ab2f089395a244dc4af0f9e3b" = "0jxf9dnsg14ffd1y3i7md2ninrds4daq1fmpnd6j5z99im07ns52";
+  "https://github.com/simplex-chat/simplexmq.git"."a516c2f72c81bb4a433c4065b1b5aa484b8292b1" = "05ny2i262c236li5w040i1nd3l037cpzgbzjknlla9dd139f3al3";
   "https://github.com/simplex-chat/hs-socks.git"."a30cc7a79a08d8108316094f8f2f82a0c5e1ac51" = "0yasvnr7g91k76mjkamvzab2kvlb1g5pspjyjn2fr6v83swjhj38";
   "https://github.com/simplex-chat/direct-sqlcipher.git"."f814ee68b16a9447fbb467ccc8f29bdd3546bfd9" = "1ql13f4kfwkbaq7nygkxgw84213i0zm7c1a8hwvramayxl38dq5d";
   "https://github.com/simplex-chat/sqlcipher-simple.git"."a46bd361a19376c5211f1058908fc0ae6bf42446" = "1z0r78d8f0812kxbgsm735qf6xx8lvaz27k1a0b4a2m0sshpd5gl";
diff --git a/simplex-chat.cabal b/simplex-chat.cabal
index cd010a0ee..edc65a6df 100644
--- a/simplex-chat.cabal
+++ b/simplex-chat.cabal
@@ -5,7 +5,7 @@ cabal-version: 1.12
 -- see: https://github.com/sol/hpack
 
 name:           simplex-chat
-version:        5.5.1.0
+version:        5.5.2.0
 category:       Web, System, Services, Cryptography
 homepage:       https://github.com/simplex-chat/simplex-chat#readme
 author:         simplex.chat