diff --git a/CMakeLists.txt b/CMakeLists.txt
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,8 +1,8 @@
 # set minimum version requirements
 cmake_minimum_required(VERSION 3.0)
 set(REQUIRED_QT_VERSION 5.8.0)
-set(KF5_VERSION "5.46.0") # handled by release scripts
-set(KF5_DEP_VERSION "5.46.0") # handled by release scripts
+set(KF5_VERSION "5.45.0") # handled by release scripts
+set(KF5_DEP_VERSION "5.45.0") # handled by release scripts
 
 # set up project
 project(Baloo VERSION ${KF5_VERSION})
diff --git a/src/file/fileexcludefilters.cpp b/src/file/fileexcludefilters.cpp
--- a/src/file/fileexcludefilters.cpp
+++ b/src/file/fileexcludefilters.cpp
@@ -64,17 +64,23 @@
     "*.orig",
     ".histfile.*",
     ".xsession-errors*",
+    "*.js.map",
+    "*.css.map,"
+    "*.so",
+    "*.db",
+    "*.pluginmap",
 
     // Compiled files
     "*.class", // Java
     "*.pyc",   // Python
     "*.elc",   // Emacs Lisp
+    "*.qrc",   // QML
 
     // end of list
     nullptr
 };
 
-const int s_defaultFileExcludeFiltersVersion = 2;
+const int s_defaultFileExcludeFiltersVersion = 3;
 
 const char* const s_defaultFolderExcludeFilters[] = {
     "po",
@@ -96,6 +102,7 @@
     ".pch",
     ".uic",
     "__pycache__",
+    "node_modules",
 
     //misc
     "core-dumps",
@@ -105,7 +112,7 @@
     nullptr
 };
 
-const int s_defaultFolderExcludeFiltersVersion = 1;
+const int s_defaultFolderExcludeFiltersVersion = 2;
 
 const char* const s_sourceCodeMimeTypes[] = {
     "text/css",
@@ -120,10 +127,19 @@
     "text/x-ruby",
     "text/x-scheme",
     "text/x-pascal",
+    "text/x-fortran",
+    "text/x-erlang",
+    "text/x-cmake",
+    "text/x-lua",
     "text/x-yacc",
     "text/x-sed",
     "text/x-haskell",
+    "text/x-copying", // COPYING files
+    "text/x-readme", // README files
     "text/asp",
+    "text/jsx",
+    "text/csx",
+    "text/vnd.trolltech.linguist",
     "application/x-awk",
     "application/x-cgi",
     "application/x-csh",
@@ -134,11 +150,18 @@
     "application/x-php",
     "application/x-python",
     "application/x-sh",
+    "application/xml",
+    "application/javascript",
+    "application/json",
+    "application/geo+json",
+    "application/json-patch+json",
+    "application/ld+json",
+    "application/x-ipynb+json", // Jupyter notebooks
 
     // end of list
     nullptr
 };
-const int s_sourceCodeMimeTypesVersion = 1;
+const int s_sourceCodeMimeTypesVersion = 2;
 }