diff --git a/etc/config/settings.csh b/etc/config/settings.csh
index 31669ae6767eea87b3aa2388f599228a82203f46..fd6cc373309d2bcdac11893cff3defa888a22d98 100644
--- a/etc/config/settings.csh
+++ b/etc/config/settings.csh
@@ -219,7 +219,7 @@ case ThirdParty:
     switch ("$WM_COMPILER")
     case Gcc:
     case Gcc48:
-        set gcc_version=gcc-4.8.4
+        set gcc_version=gcc-4.8.5
         set gmp_version=gmp-5.1.2
         set mpfr_version=mpfr-3.1.2
         set mpc_version=mpc-1.0.1
@@ -243,7 +243,7 @@ case ThirdParty:
         set mpc_version=mpc-1.0.1
         breaksw
     case Gcc49:
-        set gcc_version=gcc-4.9.2
+        set gcc_version=gcc-4.9.3
         set gmp_version=gmp-5.1.2
         set mpfr_version=mpfr-3.1.2
         set mpc_version=mpc-1.0.1
@@ -254,6 +254,18 @@ case ThirdParty:
         set mpfr_version=mpfr-3.1.2
         set mpc_version=mpc-1.0.1
         breaksw
+    case Gcc52:
+        set gcc_version=gcc-5.2.0
+        set gmp_version=gmp-5.1.2
+        set mpfr_version=mpfr-3.1.2
+        set mpc_version=mpc-1.0.1
+        breaksw
+    case Gcc53:
+        set gcc_version=gcc-5.3.0
+        set gmp_version=gmp-5.1.2
+        set mpfr_version=mpfr-3.1.2
+        set mpc_version=mpc-1.0.1
+        breaksw
     case Clang:
         # Using clang - not gcc
         setenv WM_CC 'clang'
diff --git a/etc/config/settings.sh b/etc/config/settings.sh
index 02be26b9d76a2493d6fd01a756fcad1b01b038af..ebbc680218fc9f6db0256eaae128f653f46a8c9d 100644
--- a/etc/config/settings.sh
+++ b/etc/config/settings.sh
@@ -244,7 +244,7 @@ case "${foamCompiler}" in
 OpenFOAM | ThirdParty)
     case "$WM_COMPILER" in
     Gcc | Gcc48)
-        gcc_version=gcc-4.8.4
+        gcc_version=gcc-4.8.5
         gmp_version=gmp-5.1.2
         mpfr_version=mpfr-3.1.2
         mpc_version=mpc-1.0.1
@@ -268,7 +268,7 @@ OpenFOAM | ThirdParty)
         mpc_version=mpc-1.0.1
         ;;
     Gcc49)
-        gcc_version=gcc-4.9.2
+        gcc_version=gcc-4.9.3
         gmp_version=gmp-5.1.2
         mpfr_version=mpfr-3.1.2
         mpc_version=mpc-1.0.1
@@ -279,6 +279,18 @@ OpenFOAM | ThirdParty)
         mpfr_version=mpfr-3.1.2
         mpc_version=mpc-1.0.1
         ;;
+    Gcc52)
+        gcc_version=gcc-5.2.0
+        gmp_version=gmp-5.1.2
+        mpfr_version=mpfr-3.1.2
+        mpc_version=mpc-1.0.1
+        ;;
+    Gcc53)
+        gcc_version=gcc-5.3.0
+        gmp_version=gmp-5.1.2
+        mpfr_version=mpfr-3.1.2
+        mpc_version=mpc-1.0.1
+        ;;
     Clang)
         # using clang - not gcc
         export WM_CC='clang'