diff --git a/cmake/FindSphinx.cmake b/cmake/FindSphinx.cmake
--- a/cmake/FindSphinx.cmake
+++ b/cmake/FindSphinx.cmake
@@ -56,7 +56,7 @@
         sphinx-build
         sphinx-build2
         sphinx-build3
-    DOC "Sphinx Documentation Builder (http://sphinx-doc.org/)"
+    DOC "Sphinx Documentation Builder (https://www.sphinx-doc.org/)"
 )
 
 if (Sphinx_BUILD_EXECUTABLE)
diff --git a/find-modules/FindLibExiv2.cmake b/find-modules/FindLibExiv2.cmake
--- a/find-modules/FindLibExiv2.cmake
+++ b/find-modules/FindLibExiv2.cmake
@@ -113,6 +113,6 @@
 
 include(FeatureSummary)
 set_package_properties(LibExiv2 PROPERTIES
-    URL "http://www.exiv2.org"
+    URL "https://www.exiv2.org"
     DESCRIPTION "Image metadata support"
 )
diff --git a/find-modules/FindOpenEXR.cmake b/find-modules/FindOpenEXR.cmake
--- a/find-modules/FindOpenEXR.cmake
+++ b/find-modules/FindOpenEXR.cmake
@@ -136,7 +136,7 @@
 
 include(FeatureSummary)
 set_package_properties(OpenEXR PROPERTIES
-   URL http://www.openexr.com/
+   URL https://www.openexr.com/
    DESCRIPTION "A library for handling OpenEXR high dynamic-range image files")
 
 mark_as_advanced(
diff --git a/kde-modules/clang-format.cmake b/kde-modules/clang-format.cmake
--- a/kde-modules/clang-format.cmake
+++ b/kde-modules/clang-format.cmake
@@ -26,7 +26,7 @@
 # Style for C++
 Language: Cpp
 
-# base is WebKit coding style: http://www.webkit.org/coding/coding-style.html
+# base is WebKit coding style: https://webkit.org/code-style-guidelines/
 # below are only things set that diverge from this style!
 BasedOnStyle: WebKit