diff --git a/.travis.yml b/.travis.yml
index eb6bc47f627..bd15fd4bfb9 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -9,6 +9,8 @@ cache:
   directories:
     - $HOME/build-cache
     - $HOME/flatpak-cache
+    - $TRAVIS_BUILD_DIR/projectfiles/VC14/Debug
+    - $TRAVIS_BUILD_DIR/projectfiles/VC14/Release
 
 git:
   depth: 5
diff --git a/utils/travis/steps/install.sh b/utils/travis/steps/install.sh
index 75178f6542e..ab75443b150 100755
--- a/utils/travis/steps/install.sh
+++ b/utils/travis/steps/install.sh
@@ -28,6 +28,7 @@ if [ "$TRAVIS_OS_NAME" = "osx" ]; then
     fi
 elif [ "$TRAVIS_OS_NAME" = "windows" ]; then
     start=`pwd`
+    choco install sqlite
     choco install python --version=3.6.8
     cd /c/Python36
     ln -s python.exe python3.exe
@@ -38,12 +39,14 @@ elif [ "$TRAVIS_OS_NAME" = "windows" ]; then
     mv external-VC15 external
     cd $start
     export PATH="/c/Python36:"$PATH":/c/Program Files (x86)/Microsoft Visual Studio/2017/BuildTools/MSBuild/15.0/Bin/amd64:$start/../external/dll"
-    if [ "$(which python3)" == "" ] || [ ! -d "../external" ]; then
+    if [ "$(which python3)" == "" ] || [ "$(which sqlite3)" == "" ] || [ ! -d "../external" ]; then
       echo "Failed to retrieve dependencies!"
       exit 1
     else
       echo "Dependencies retrieved and installed!"
     fi
+
+    ./utils/travis/windows-file-hasher.sh "projectfiles/VC14/$OPT/filehashes.sqlite"
 else
     if [ "$NLS" != "true" ]; then
         echo "po/" >> .dockerignore
diff --git a/utils/travis/steps/script.sh b/utils/travis/steps/script.sh
index 30e7e5a53d7..f207d46b840 100755
--- a/utils/travis/steps/script.sh
+++ b/utils/travis/steps/script.sh
@@ -42,11 +42,19 @@ if [ "$TRAVIS_OS_NAME" = "osx" ]; then
 elif [ "$TRAVIS_OS_NAME" = "windows" ]; then
     powershell "MSBuild.exe projectfiles/VC14/wesnoth.sln -p:PlatformToolset=v141 -p:Configuration=$OPT"
     BUILD_RET=$?
+
+    if [ "$BUILD_RET" != "0" ]; then
+        sqlite3 "projectfiles/VC14/$OPT/filehashes.sqlite" "update FILES set MD5 = OLD_MD5, OLD_MD5 = '-' where OLD_MD5 != '-'"
+    else
+        sqlite3 "projectfiles/VC14/$OPT/filehashes.sqlite" "update FILES set OLD_MD5 = '-' where OLD_MD5 != '-'"
+    fi
+
     if [ "$OPT" == "Release" ] && [ "$BUILD_RET" == "0" ]; then
         ./run_wml_tests -g -v -c -t "$WML_TEST_TIME"
-    else
-        exit $BUILD_RET
+        BUILD_RET=$?
     fi
+
+    exit $BUILD_RET
 else
 # additional permissions required due to flatpak's use of bubblewrap
     docker run --cap-add=ALL --privileged \
diff --git a/utils/travis/windows-file-hasher.sh b/utils/travis/windows-file-hasher.sh
new file mode 100755
index 00000000000..4b1dc7aaf3d
--- /dev/null
+++ b/utils/travis/windows-file-hasher.sh
@@ -0,0 +1,32 @@
+#!/bin/bash
+DBFILE="$1"
+if [ "$DBFILE" == "" ]; then
+  echo "No database file provided!"
+  exit 1
+fi
+
+sqlite3 $DBFILE "create table if not exists FILES(NAME VARCHAR(1000) PRIMARY KEY, MD5 VARCHAR(32), OLD_MD5 VARCHAR(32) DEFAULT '-')"
+
+for file in $(find . -type f | grep '\.c$\|\.cpp$\|\.h$\|\.hpp$\|\.ipp$\|\.tpp$\|\.ii' | cut -c 3-); do
+  newhash=`md5sum "$file" | cut -d" " -f1`
+  oldhash=`sqlite3 "$DBFILE" "select MD5 from FILES where NAME = '"$file"'"`
+
+  if [ "$oldhash" == "" ]; then
+    sqlite3 "$DBFILE" "insert into FILES(NAME, MD5) values('$file', '$newhash')"
+    printf '%-15s %-60s has %-32s\n' "new file:" "$file" "$newhash"
+  elif [ "$oldhash" != "$newhash" ]; then
+    sqlite3 "$DBFILE" "update FILES set OLD_MD5 = MD5, MD5 = '$newhash' where NAME = '$file'"
+    printf '%-15s %-60s had %-32s %-13s %-32s\n' "changed file:" "$file" "$oldhash" "and now has" "$newhash"
+  else
+    printf '%-15s %-60s had %-32s %-13s %-32s\n' "unchanged file:" "$file" "$oldhash" "and still has" "$newhash"
+    touch -d "20 years ago" "$file"
+  fi
+done
+
+for file in `sqlite3 "$DBFILE" "select NAME from FILES"`; do
+  file=`echo "$file" | tr -d '\r'`
+  if [ ! -f "$file" ]; then
+    printf '%-15s %-60s\n' "File removed:" "$file"
+    sqlite3 "$DBFILE" "delete from FILES where NAME = '$file'"
+  fi
+done