diff --git a/etc/bashrc b/etc/bashrc
index 6f77c9f6fd452ad501e3c64f81529c4b1c6fe1c0..72a52b111801e45e0705e5401c559984bf51205d 100644
--- a/etc/bashrc
+++ b/etc/bashrc
@@ -68,7 +68,7 @@ projectDir="$HOME/OpenFOAM/OpenFOAM-$WM_PROJECT_VERSION"
 export WM_COMPILER_TYPE=system
 
 # [WM_COMPILER] - Compiler:
-# = Gcc | Gcc4[8-9] | Gcc5[1-5] | Gcc6[1-4] | Gcc7[1-3] | Gcc8[12] |
+# = Gcc | Gcc4[8-9] | Gcc5[1-5] | Gcc6[1-5] | Gcc7[1-4] | Gcc8[12] |
 #   Clang | Clang3[7-9] | Clang[4-6]0 | Icc | Cray | Arm
 export WM_COMPILER=Gcc
 
diff --git a/etc/config.csh/compiler b/etc/config.csh/compiler
index 5f44522f055cdeb9eddbecebcae6b1017b914565..d5c8ad277222e826133f3d2d72092103ec33ed53 100644
--- a/etc/config.csh/compiler
+++ b/etc/config.csh/compiler
@@ -62,6 +62,9 @@ case ThirdParty:
     case Gcc64*:
         set gcc_version=gcc-6.4.0
         breaksw
+    case Gcc65*:
+        set gcc_version=gcc-6.5.0
+        breaksw
     case Gcc71*:
         set gcc_version=gcc-7.1.0
         breaksw
@@ -71,6 +74,9 @@ case ThirdParty:
     case Gcc73*:
         set gcc_version=gcc-7.3.0
         breaksw
+    case Gcc74*:
+        set gcc_version=gcc-7.4.0
+        breaksw
     case Gcc81*:
         set gcc_version=gcc-8.1.0
         breaksw
diff --git a/etc/config.sh/compiler b/etc/config.sh/compiler
index 936f42742da68e47fff3d098366305b1f295c304..f75b89c06e6933e7095e9846d1a4cab79184f705 100644
--- a/etc/config.sh/compiler
+++ b/etc/config.sh/compiler
@@ -60,6 +60,9 @@ ThirdParty)
     Gcc64*)
         gcc_version=gcc-6.4.0
         ;;
+    Gcc65*)
+        gcc_version=gcc-6.5.0
+        ;;
     Gcc71*)
         gcc_version=gcc-7.1.0
         ;;
@@ -69,6 +72,9 @@ ThirdParty)
     Gcc73*)
         gcc_version=gcc-7.3.0
         ;;
+    Gcc74*)
+        gcc_version=gcc-7.4.0
+        ;;
     Gcc81*)
         gcc_version=gcc-8.1.0
         ;;
diff --git a/etc/cshrc b/etc/cshrc
index 9f039e6a1903cd66ddcebf15fc3c022d3df37e5b..97e25069ca0604bdbbd0a7cad66dd699fcb2734a 100644
--- a/etc/cshrc
+++ b/etc/cshrc
@@ -70,7 +70,7 @@ set projectDir=`lsof +p $$ |& \
 setenv WM_COMPILER_TYPE system
 
 # [WM_COMPILER] - Compiler:
-# = Gcc | Gcc4[8-9] | Gcc5[1-5] | Gcc6[1-4] | Gcc7[1-3] | Gcc8[12] |
+# = Gcc | Gcc4[8-9] | Gcc5[1-5] | Gcc6[1-5] | Gcc7[1-4] | Gcc8[12] |
 #   Clang | Clang3[7-9] | Clang[4-6]0 | Icc | Cray | Arm
 setenv WM_COMPILER Gcc