diff --git a/.github/workflows/komodo_mac_ci.yml b/.github/workflows/komodo_mac_ci.yml
index 933165b3cbb..f8ea3454118 100644
--- a/.github/workflows/komodo_mac_ci.yml
+++ b/.github/workflows/komodo_mac_ci.yml
@@ -26,7 +26,7 @@ jobs:
           brew upgrade || true
           brew tap discoteq/discoteq; brew install flock
           brew install autoconf autogen automake
-          brew install gcc@8
+          brew install gcc@12
           brew install binutils
           brew install protobuf
           brew install coreutils
diff --git a/.github/workflows/komodod_cd.yml b/.github/workflows/komodod_cd.yml
index 78cd31ca2f1..eabe2183562 100644
--- a/.github/workflows/komodod_cd.yml
+++ b/.github/workflows/komodod_cd.yml
@@ -81,7 +81,7 @@ jobs:
           brew upgrade || true
           brew tap discoteq/discoteq; brew install flock
           brew install autoconf autogen automake
-          brew install gcc@8
+          brew install gcc@12
           brew install binutils
           brew install protobuf
           brew install coreutils
diff --git a/README.md b/README.md
index 9568c70741a..82f2224f65b 100644
--- a/README.md
+++ b/README.md
@@ -94,7 +94,7 @@ brew update
 brew upgrade
 brew tap discoteq/discoteq; brew install flock
 brew install autoconf autogen automake
-brew update && brew install gcc@8
+brew update && brew install gcc@12
 brew install binutils
 brew install protobuf
 brew install coreutils
diff --git a/depends/builders/darwin.mk b/depends/builders/darwin.mk
index cbbc5a667ab..71615d1f420 100644
--- a/depends/builders/darwin.mk
+++ b/depends/builders/darwin.mk
@@ -1,5 +1,5 @@
-build_darwin_CC = gcc-8
-build_darwin_CXX = g++-8
+build_darwin_CC = gcc-12
+build_darwin_CXX = g++-12
 build_darwin_AR: = $(shell xcrun -f ar)
 build_darwin_RANLIB: = $(shell xcrun -f ranlib)
 build_darwin_STRIP: = $(shell xcrun -f strip)
@@ -10,8 +10,8 @@ build_darwin_SHA256SUM = shasum -a 256
 build_darwin_DOWNLOAD = curl --connect-timeout $(DOWNLOAD_CONNECT_TIMEOUT) --retry $(DOWNLOAD_RETRIES) -L -f -o
 
 #darwin host on darwin builder. overrides darwin host preferences.
-darwin_CC= gcc-8
-darwin_CXX= g++-8
+darwin_CC= gcc-12
+darwin_CXX= g++-12
 darwin_AR:=$(shell xcrun -f ar)
 darwin_RANLIB:=$(shell xcrun -f ranlib)
 darwin_STRIP:=$(shell xcrun -f strip)
diff --git a/depends/hosts/darwin.mk b/depends/hosts/darwin.mk
index 43a4c88f2ab..9b0c9e6536e 100644
--- a/depends/hosts/darwin.mk
+++ b/depends/hosts/darwin.mk
@@ -2,8 +2,8 @@ OSX_MIN_VERSION=10.12
 OSX_SDK_VERSION=10.12
 OSX_SDK=$(SDK_PATH)/MacOSX$(OSX_SDK_VERSION).sdk
 LD64_VERSION=253.9
-darwin_CC=gcc-8 -target $(host) -mmacosx-version-min=$(OSX_MIN_VERSION) --sysroot $(OSX_SDK) -mlinker-version=$(LD64_VERSION)
-darwin_CXX=g++-8 -target $(host) -mmacosx-version-min=$(OSX_MIN_VERSION) --sysroot $(OSX_SDK) -mlinker-version=$(LD64_VERSION)
+darwin_CC=gcc-12 -target $(host) -mmacosx-version-min=$(OSX_MIN_VERSION) --sysroot $(OSX_SDK) -mlinker-version=$(LD64_VERSION)
+darwin_CXX=g++-12 -target $(host) -mmacosx-version-min=$(OSX_MIN_VERSION) --sysroot $(OSX_SDK) -mlinker-version=$(LD64_VERSION)
 
 darwin_CFLAGS=-pipe
 darwin_CXXFLAGS=$(darwin_CFLAGS)
diff --git a/src/cc/Makefile_custom b/src/cc/Makefile_custom
index 364f9f4a121..e7835182f01 100755
--- a/src/cc/Makefile_custom
+++ b/src/cc/Makefile_custom
@@ -1,6 +1,6 @@
 SHELL		= /bin/sh
 CC		= gcc
-CC_DARWIN	= g++-8
+CC_DARWIN	= g++-12
 CC_WIN		= x86_64-w64-mingw32-gcc-posix
 CFLAGS_DARWIN	= -DBUILD_CUSTOMCC -std=c++11 -arch x86_64 -I../secp256k1/include -I../../depends/$(shell echo `../..//depends/config.guess`/include) -I../univalue/include -I../cryptoconditions/include -I../cryptoconditions/src -I../cryptoconditions/src/asn -I.. -I. -fPIC -Wl,-undefined -Wl,dynamic_lookup -Wno-write-strings -shared -dynamiclib
 CFLAGS		= -Wno-write-strings -DBUILD_CUSTOMCC -std=c++11 -I../secp256k1/include -I../../depends/$(shell echo `../..//depends/config.guess`/include) -I../univalue/include -I../cryptoconditions/include -I../cryptoconditions/src -I../cryptoconditions/src/asn -I.. -I. -fPIC -shared
diff --git a/src/cc/Makefile_rogue b/src/cc/Makefile_rogue
index 3b2f65e00f6..fe1c63b940b 100644
--- a/src/cc/Makefile_rogue
+++ b/src/cc/Makefile_rogue
@@ -1,6 +1,6 @@
 SHELL		= /bin/sh
 CC		= gcc
-CC_DARWIN	= g++-8
+CC_DARWIN	= g++-12
 CC_WIN		= x86_64-w64-mingw32-gcc-posix
 CFLAGS_DARWIN	= -DBUILD_ROGUE -std=c++11 -arch x86_64 -I../../depends/$(shell echo `../..//depends/config.guess`/include) -I../univalue/include -I../cryptoconditions/include -I../cryptoconditions/src -I../cryptoconditions/src/asn -I.. -I. -fPIC -Wl,-undefined -Wl,dynamic_lookup -Wno-write-strings -shared -dynamiclib
 CFLAGS		= -Wno-write-strings -DBUILD_ROGUE -std=c++11 -I../../depends/$(shell echo `../..//depends/config.guess`/include) -I../univalue/include -I../cryptoconditions/include -I../cryptoconditions/src -I../cryptoconditions/src/asn -I.. -I. -fPIC -shared
diff --git a/src/cc/import.cpp b/src/cc/import.cpp
index 13a2325dac3..331c868b237 100644
--- a/src/cc/import.cpp
+++ b/src/cc/import.cpp
@@ -257,7 +257,7 @@ int32_t CheckCODAimport(CTransaction importTx,CTransaction burnTx,std::vector<CT
     {
         sprintf(out + (i * 2), "%02x", hash[i]);
     }
-    out[65]='\0';
+    out[64]='\0';
     codaburntxid.SetHex(out);
     result=CodaRPC(&retstr,"prove-payment","-address",srcaddr.c_str(),"-receipt-chain-hash",receipt.c_str(),"");
     if (result==0)
diff --git a/src/komodo.cpp b/src/komodo.cpp
index 0164301d2d6..b21c946e60d 100644
--- a/src/komodo.cpp
+++ b/src/komodo.cpp
@@ -831,7 +831,7 @@ int32_t komodo_connectblock(bool fJustCheck, CBlockIndex *pindex,CBlock& block)
             return(-1);
         
         fprintf(stderr,"komodo_connectblock: unxexpected behaviour when fJustCheck == true, report blackjok3rtt plz ! \n");
-        /* this needed by gcc-8, it counts here that control reaches end of non-void function without this.
+        /* this needed by gcc-12, it counts here that control reaches end of non-void function without this.
            by default, we count that if control reached here -> the valid notarization isnt in position 1 or there are too many notarizations in this block.
         */
         return(-1); 
diff --git a/toolchain-info.sh b/toolchain-info.sh
index 6a0fc7e75af..f313f67b3f7 100755
--- a/toolchain-info.sh
+++ b/toolchain-info.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
 
-tools=("gcc-8" "g++-8" "otool" "nm")
+tools=("gcc-12" "g++-12" "otool" "nm")
 
 echo "Platform: `uname -a`"
 echo "-------------------------------------"
diff --git a/zcutil/build-mac-dtest.sh b/zcutil/build-mac-dtest.sh
index 701aab871af..5a772b4cd6d 100755
--- a/zcutil/build-mac-dtest.sh
+++ b/zcutil/build-mac-dtest.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
-export CC=gcc-8
-export CXX=g++-8
+export CC=gcc-12
+export CXX=g++-12
 export LIBTOOL=libtool
 export AR=ar
 export RANLIB=ranlib
diff --git a/zcutil/build-mac.sh b/zcutil/build-mac.sh
index 77a5e764ecf..2c65d335c63 100755
--- a/zcutil/build-mac.sh
+++ b/zcutil/build-mac.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
-export CC=gcc-8
-export CXX=g++-8
+export CC=gcc-12
+export CXX=g++-12
 export LIBTOOL=libtool
 export AR=ar
 export RANLIB=ranlib
@@ -57,7 +57,7 @@ make "$@" -C ./depends/ V=1 NO_QT=1 NO_PROTON=1
 ./autogen.sh
 
 CPPFLAGS="-I$PREFIX/include -arch x86_64" LDFLAGS="-L$PREFIX/lib -arch x86_64 -Wl,-no_pie" \
-CXXFLAGS="-arch x86_64 -I/usr/local/Cellar/gcc\@8/8.3.0/include/c++/8.3.0/ -I$PREFIX/include -fwrapv -fno-strict-aliasing -Wno-builtin-declaration-mismatch -Werror -Wno-error=attributes -g -Wl,-undefined -Wl,dynamic_lookup" \
+CXXFLAGS="-arch x86_64 -I/usr/local/Cellar/gcc\@8/8.3.0/include/c++/8.3.0/ -I$PREFIX/include -fwrapv -fno-strict-aliasing -Wno-builtin-declaration-mismatch -Wno-deprecated-declarations -Werror -Wno-error=attributes -g -Wl,-undefined -Wl,dynamic_lookup" \
 ./configure --prefix="${PREFIX}" --with-gui=no "$HARDENING_ARG" "$LCOV_ARG" "$DEBUGGING_ARG"
 
 make "$@" NO_GTEST=1 STATIC=1