diff --git a/doc/building.dox b/doc/building.dox
index bcc11f585..a3ece2914 100644
--- a/doc/building.dox
+++ b/doc/building.dox
@@ -38,8 +38,9 @@ namespace Magnum {
 Minimal set of tools and libraries required for building is:
 
 -   C++ compiler with good C++11 support. Compilers which are tested to have
-    everything needed are **GCC** >= 4.8.1, **Clang** >= 3.3 and **MSVC**
-    >= 2015. On Windows you can also use **Clang-CL** or **MinGW-w64**.
+    everything needed are **GCC** >= 4.8.1, **Clang** >= 6 (or equivalently
+    **Apple Clang** >= 10) and **MSVC** >= 2015. On Windows you can also use
+    **Clang-CL** or **MinGW-w64**.
 -   **CMake** >= 3.4
 -   **Corrade** --- Plugin management and utility library. See
     @ref building-corrade "Corrade download and installation guide" for more
diff --git a/doc/changelog.dox b/doc/changelog.dox
index dfa11c6ff..be6643a91 100644
--- a/doc/changelog.dox
+++ b/doc/changelog.dox
@@ -569,6 +569,9 @@ See also:
 
 @subsection changelog-latest-buildsystem Build system
 
+-   The oldest supported Clang version is now 6.0 (available on Ubuntu 18.04),
+    or equivalently Apple Clang 10.0 (Xcode 10). Oldest supported GCC version
+    is still 4.8.
 -   Fixed compilation of the @ref GL library on macOS with ANGLE --- new code
     assumed macOS is always desktop GL (see [mosra/magnum#452](https://github.com/mosra/magnum/issues/452))
 -   Avoiding conflicts of Magnum's own GL headers with `GLES3/gl32.h` (see
diff --git a/src/Magnum/ShaderTools/AbstractConverter.cpp b/src/Magnum/ShaderTools/AbstractConverter.cpp
index b3f0c49b6..54b527bd9 100644
--- a/src/Magnum/ShaderTools/AbstractConverter.cpp
+++ b/src/Magnum/ShaderTools/AbstractConverter.cpp
@@ -287,7 +287,7 @@ AbstractConverter::convertDataToData(const Stage stage, const Containers::ArrayV
     CORRADE_ASSERT(!out || !out->deleter(),
         "ShaderTools::AbstractConverter::convertDataToData(): implementation is not allowed to use a custom Array deleter", {});
 
-    /* GCC 4.8 and Clang 3.8 need an explicit conversion here */
+    /* GCC 4.8 needs an explicit conversion here */
     #ifdef MAGNUM_BUILD_DEPRECATED
     return Implementation::OptionalButAlsoArray<char>{std::move(out)};
     #else
@@ -435,7 +435,7 @@ AbstractConverter::convertFileToData(const Stage stage, const Containers::String
     CORRADE_ASSERT(!out || !out->deleter(),
         "ShaderTools::AbstractConverter::convertFileToData(): implementation is not allowed to use a custom Array deleter", {});
 
-    /* GCC 4.8 and Clang 3.8 need an explicit conversion here */
+    /* GCC 4.8 needs an explicit conversion here */
     #ifdef MAGNUM_BUILD_DEPRECATED
     return Implementation::OptionalButAlsoArray<char>{std::move(out)};
     #else
@@ -479,7 +479,7 @@ AbstractConverter::linkDataToData(const Containers::ArrayView<const Containers::
     CORRADE_ASSERT(!out || !out->deleter(),
         "ShaderTools::AbstractConverter::linkDataToData(): implementation is not allowed to use a custom Array deleter", {});
 
-    /* GCC 4.8 and Clang 3.8 need an explicit conversion here */
+    /* GCC 4.8 needs an explicit conversion here */
     #ifdef MAGNUM_BUILD_DEPRECATED
     return Implementation::OptionalButAlsoArray<char>{std::move(out)};
     #else
@@ -693,7 +693,7 @@ AbstractConverter::linkFilesToData(const Containers::ArrayView<const Containers:
     CORRADE_ASSERT(!out || !out->deleter(),
         "ShaderTools::AbstractConverter::linkFilesToData(): implementation is not allowed to use a custom Array deleter", {});
 
-    /* GCC 4.8 and Clang 3.8 need an explicit conversion here */
+    /* GCC 4.8 needs an explicit conversion here */
     #ifdef MAGNUM_BUILD_DEPRECATED
     return Implementation::OptionalButAlsoArray<char>{std::move(out)};
     #else
diff --git a/src/Magnum/Trade/AbstractImageConverter.cpp b/src/Magnum/Trade/AbstractImageConverter.cpp
index bfcc85b76..e21af8147 100644
--- a/src/Magnum/Trade/AbstractImageConverter.cpp
+++ b/src/Magnum/Trade/AbstractImageConverter.cpp
@@ -308,7 +308,7 @@ AbstractImageConverter::convertToData(const ImageView1D& image) {
     Containers::Optional<Containers::Array<char>> out = doConvertToData(image);
     CORRADE_ASSERT(!out || !out->deleter(), "Trade::AbstractImageConverter::convertToData(): implementation is not allowed to use a custom Array deleter", {});
 
-    /* GCC 4.8 and Clang 3.8 need an explicit conversion here */
+    /* GCC 4.8 needs an explicit conversion here */
     #ifdef MAGNUM_BUILD_DEPRECATED
     return Implementation::ImageConverterOptionalButAlsoArray<char>{std::move(out)};
     #else
@@ -341,7 +341,7 @@ AbstractImageConverter::convertToData(const ImageView2D& image) {
     Containers::Optional<Containers::Array<char>> out = doConvertToData(image);
     CORRADE_ASSERT(!out || !out->deleter(), "Trade::AbstractImageConverter::convertToData(): implementation is not allowed to use a custom Array deleter", {});
 
-    /* GCC 4.8 and Clang 3.8 need an explicit conversion here */
+    /* GCC 4.8 needs an explicit conversion here */
     #ifdef MAGNUM_BUILD_DEPRECATED
     return Implementation::ImageConverterOptionalButAlsoArray<char>{std::move(out)};
     #else
@@ -381,7 +381,7 @@ AbstractImageConverter::convertToData(const ImageView3D& image) {
     Containers::Optional<Containers::Array<char>> out = doConvertToData(image);
     CORRADE_ASSERT(!out || !out->deleter(), "Trade::AbstractImageConverter::convertToData(): implementation is not allowed to use a custom Array deleter", {});
 
-    /* GCC 4.8 and Clang 3.8 need an explicit conversion here */
+    /* GCC 4.8 needs an explicit conversion here */
     #ifdef MAGNUM_BUILD_DEPRECATED
     return Implementation::ImageConverterOptionalButAlsoArray<char>{std::move(out)};
     #else
@@ -414,7 +414,7 @@ AbstractImageConverter::convertToData(const CompressedImageView1D& image) {
     Containers::Optional<Containers::Array<char>> out = doConvertToData(image);
     CORRADE_ASSERT(!out || !out->deleter(), "Trade::AbstractImageConverter::convertToData(): implementation is not allowed to use a custom Array deleter", {});
 
-    /* GCC 4.8 and Clang 3.8 need an explicit conversion here */
+    /* GCC 4.8 needs an explicit conversion here */
     #ifdef MAGNUM_BUILD_DEPRECATED
     return Implementation::ImageConverterOptionalButAlsoArray<char>{std::move(out)};
     #else
@@ -447,7 +447,7 @@ AbstractImageConverter::convertToData(const CompressedImageView2D& image) {
     Containers::Optional<Containers::Array<char>> out = doConvertToData(image);
     CORRADE_ASSERT(!out || !out->deleter(), "Trade::AbstractImageConverter::convertToData(): implementation is not allowed to use a custom Array deleter", {});
 
-    /* GCC 4.8 and Clang 3.8 need an explicit conversion here */
+    /* GCC 4.8 needs an explicit conversion here */
     #ifdef MAGNUM_BUILD_DEPRECATED
     return Implementation::ImageConverterOptionalButAlsoArray<char>{std::move(out)};
     #else
@@ -487,7 +487,7 @@ AbstractImageConverter::convertToData(const CompressedImageView3D& image) {
     Containers::Optional<Containers::Array<char>> out = doConvertToData(image);
     CORRADE_ASSERT(!out || !out->deleter(), "Trade::AbstractImageConverter::convertToData(): implementation is not allowed to use a custom Array deleter", {});
 
-    /* GCC 4.8 and Clang 3.8 need an explicit conversion here */
+    /* GCC 4.8 needs an explicit conversion here */
     #ifdef MAGNUM_BUILD_DEPRECATED
     return Implementation::ImageConverterOptionalButAlsoArray<char>{std::move(out)};
     #else
@@ -603,7 +603,7 @@ AbstractImageConverter::convertToData(const Containers::ArrayView<const ImageVie
     Containers::Optional<Containers::Array<char>> out = doConvertToData(imageLevels);
     CORRADE_ASSERT(!out || !out->deleter(), "Trade::AbstractImageConverter::convertToData(): implementation is not allowed to use a custom Array deleter", {});
 
-    /* GCC 4.8 and Clang 3.8 need an explicit conversion here */
+    /* GCC 4.8 needs an explicit conversion here */
     #ifdef MAGNUM_BUILD_DEPRECATED
     return Implementation::ImageConverterOptionalButAlsoArray<char>{std::move(out)};
     #else
@@ -642,7 +642,7 @@ AbstractImageConverter::convertToData(const Containers::ArrayView<const ImageVie
     Containers::Optional<Containers::Array<char>> out = doConvertToData(imageLevels);
     CORRADE_ASSERT(!out || !out->deleter(), "Trade::AbstractImageConverter::convertToData(): implementation is not allowed to use a custom Array deleter", {});
 
-    /* GCC 4.8 and Clang 3.8 need an explicit conversion here */
+    /* GCC 4.8 needs an explicit conversion here */
     #ifdef MAGNUM_BUILD_DEPRECATED
     return Implementation::ImageConverterOptionalButAlsoArray<char>{std::move(out)};
     #else
@@ -681,7 +681,7 @@ AbstractImageConverter::convertToData(const Containers::ArrayView<const ImageVie
     Containers::Optional<Containers::Array<char>> out = doConvertToData(imageLevels);
     CORRADE_ASSERT(!out || !out->deleter(), "Trade::AbstractImageConverter::convertToData(): implementation is not allowed to use a custom Array deleter", {});
 
-    /* GCC 4.8 and Clang 3.8 need an explicit conversion here */
+    /* GCC 4.8 needs an explicit conversion here */
     #ifdef MAGNUM_BUILD_DEPRECATED
     return Implementation::ImageConverterOptionalButAlsoArray<char>{std::move(out)};
     #else
@@ -720,7 +720,7 @@ AbstractImageConverter::convertToData(const Containers::ArrayView<const Compress
     Containers::Optional<Containers::Array<char>> out = doConvertToData(imageLevels);
     CORRADE_ASSERT(!out || !out->deleter(), "Trade::AbstractImageConverter::convertToData(): implementation is not allowed to use a custom Array deleter", {});
 
-    /* GCC 4.8 and Clang 3.8 need an explicit conversion here */
+    /* GCC 4.8 needs an explicit conversion here */
     #ifdef MAGNUM_BUILD_DEPRECATED
     return Implementation::ImageConverterOptionalButAlsoArray<char>{std::move(out)};
     #else
@@ -759,7 +759,7 @@ AbstractImageConverter::convertToData(const Containers::ArrayView<const Compress
     Containers::Optional<Containers::Array<char>> out = doConvertToData(imageLevels);
     CORRADE_ASSERT(!out || !out->deleter(), "Trade::AbstractImageConverter::convertToData(): implementation is not allowed to use a custom Array deleter", {});
 
-    /* GCC 4.8 and Clang 3.8 need an explicit conversion here */
+    /* GCC 4.8 needs an explicit conversion here */
     #ifdef MAGNUM_BUILD_DEPRECATED
     return Implementation::ImageConverterOptionalButAlsoArray<char>{std::move(out)};
     #else
@@ -798,7 +798,7 @@ AbstractImageConverter::convertToData(const Containers::ArrayView<const Compress
     Containers::Optional<Containers::Array<char>> out = doConvertToData(imageLevels);
     CORRADE_ASSERT(!out || !out->deleter(), "Trade::AbstractImageConverter::convertToData(): implementation is not allowed to use a custom Array deleter", {});
 
-    /* GCC 4.8 and Clang 3.8 need an explicit conversion here */
+    /* GCC 4.8 needs an explicit conversion here */
     #ifdef MAGNUM_BUILD_DEPRECATED
     return Implementation::ImageConverterOptionalButAlsoArray<char>{std::move(out)};
     #else
diff --git a/src/Magnum/Trade/AbstractSceneConverter.cpp b/src/Magnum/Trade/AbstractSceneConverter.cpp
index b4c795855..309ab7807 100644
--- a/src/Magnum/Trade/AbstractSceneConverter.cpp
+++ b/src/Magnum/Trade/AbstractSceneConverter.cpp
@@ -163,7 +163,7 @@ AbstractSceneConverter::convertToData(const MeshData& mesh) {
     CORRADE_ASSERT(!out || !out->deleter() || out->deleter() == static_cast<void(*)(char*, std::size_t)>(Implementation::nonOwnedArrayDeleter) || out->deleter() == ArrayAllocator<char>::deleter,
         "Trade::AbstractSceneConverter::convertToData(): implementation is not allowed to use a custom Array deleter", {});
 
-    /* GCC 4.8 and Clang 3.8 need an explicit conversion here */
+    /* GCC 4.8 needs an explicit conversion here */
     #ifdef MAGNUM_BUILD_DEPRECATED
     return Implementation::SceneConverterOptionalButAlsoArray<char>{std::move(out)};
     #else
diff --git a/src/Magnum/Trade/Test/AbstractSceneConverterTest.cpp b/src/Magnum/Trade/Test/AbstractSceneConverterTest.cpp
index 6c2a2e287..06761c6c9 100644
--- a/src/Magnum/Trade/Test/AbstractSceneConverterTest.cpp
+++ b/src/Magnum/Trade/Test/AbstractSceneConverterTest.cpp
@@ -516,7 +516,7 @@ void AbstractSceneConverterTest::convertMeshToDataGrowableDeleter() {
             Containers::Array<char> out;
             Containers::arrayAppend<ArrayAllocator>(out, {'h', 'e', 'l', 'l', 'o'});
 
-            /* GCC 4.8 and Clang 3.8 need extra help here */
+            /* GCC 4.8 needs extra help here */
             return Containers::optional(std::move(out));
         }
     } converter;
diff --git a/src/MagnumPlugins/TgaImageConverter/TgaImageConverter.cpp b/src/MagnumPlugins/TgaImageConverter/TgaImageConverter.cpp
index 258df9f43..2a9863fb8 100644
--- a/src/MagnumPlugins/TgaImageConverter/TgaImageConverter.cpp
+++ b/src/MagnumPlugins/TgaImageConverter/TgaImageConverter.cpp
@@ -86,7 +86,7 @@ Containers::Optional<Containers::Array<char>> TgaImageConverter::doConvertToData
             pixel = Math::gather<'b', 'g', 'r', 'a'>(pixel);
     }
 
-    /* GCC 4.8 and Clang 3.8 need extra help here */
+    /* GCC 4.8 needs extra help here */
     return Containers::optional(std::move(data));
 }