diff --git a/HISTORY.rst b/HISTORY.rst
index a0ac578b32..c5fff09423 100644
--- a/HISTORY.rst
+++ b/HISTORY.rst
@@ -13,6 +13,7 @@ PlatformIO Core 5
 
 - Fixed an issue when using a custom git/ssh package with `platform_packages <https://docs.platformio.org/page/projectconf/section_env_platform.html#platform-packages>`__ option (`issue #3624 <https://github.com/platformio/platformio-core/issues/3624>`_)
 - Fixed an issue with "ImportError: cannot import name '_get_backend' from 'cryptography.hazmat.backends'" when using `Remote Development <https://docs.platformio.org/page/plus/pio-remote.html>`__ on RaspberryPi device (`issue #3652 <https://github.com/platformio/platformio-core/issues/3652>`_)
+- Fixed an issue with incorrect value for C++ language standard in IDE projects when an in-progress language standard is used (`issue #3653 <https://github.com/platformio/platformio-core/issues/3653>`_)
 
 5.0.0 (2020-09-03)
 ~~~~~~~~~~~~~~~~~~
diff --git a/platformio/ide/tpls/clion/CMakeListsPrivate.txt.tpl b/platformio/ide/tpls/clion/CMakeListsPrivate.txt.tpl
index a974ee4fe7..dc03b2e5c8 100644
--- a/platformio/ide/tpls/clion/CMakeListsPrivate.txt.tpl
+++ b/platformio/ide/tpls/clion/CMakeListsPrivate.txt.tpl
@@ -63,7 +63,7 @@ SET(CMAKE_CXX_COMPILER "{{ _normalize_path(cxx_path) }}")
 SET(CMAKE_CXX_FLAGS "{{ _normalize_path(to_unix_path(cxx_flags)) }}")
 SET(CMAKE_C_FLAGS "{{ _normalize_path(to_unix_path(cc_flags)) }}")
 
-% STD_RE = re.compile(r"\-std=[a-z\+]+(\d+)")
+% STD_RE = re.compile(r"\-std=[a-z\+]+(\w+)")
 % cc_stds = STD_RE.findall(cc_flags)
 % cxx_stds = STD_RE.findall(cxx_flags)
 % if cc_stds:
diff --git a/platformio/ide/tpls/eclipse/.settings/language.settings.xml.tpl b/platformio/ide/tpls/eclipse/.settings/language.settings.xml.tpl
index eefe1a5215..d8826fca80 100644
--- a/platformio/ide/tpls/eclipse/.settings/language.settings.xml.tpl
+++ b/platformio/ide/tpls/eclipse/.settings/language.settings.xml.tpl
@@ -1,5 +1,5 @@
 % import re
-% STD_RE = re.compile(r"(\-std=[a-z\+]+\d+)")
+% STD_RE = re.compile(r"(\-std=[a-z\+]+\w+)")
 % cxx_stds = STD_RE.findall(cxx_flags)
 % cxx_std = cxx_stds[-1] if cxx_stds else ""
 %
diff --git a/platformio/ide/tpls/emacs/.ccls.tpl b/platformio/ide/tpls/emacs/.ccls.tpl
index 9aaf54658e..b6d7d55aa4 100644
--- a/platformio/ide/tpls/emacs/.ccls.tpl
+++ b/platformio/ide/tpls/emacs/.ccls.tpl
@@ -1,5 +1,5 @@
 % import re
-% STD_RE = re.compile(r"\-std=[a-z\+]+(\d+)")
+% STD_RE = re.compile(r"\-std=[a-z\+]+(\w+)")
 % cc_stds = STD_RE.findall(cc_flags)
 % cxx_stds = STD_RE.findall(cxx_flags)
 %
diff --git a/platformio/ide/tpls/vim/.ccls.tpl b/platformio/ide/tpls/vim/.ccls.tpl
index 9aaf54658e..b6d7d55aa4 100644
--- a/platformio/ide/tpls/vim/.ccls.tpl
+++ b/platformio/ide/tpls/vim/.ccls.tpl
@@ -1,5 +1,5 @@
 % import re
-% STD_RE = re.compile(r"\-std=[a-z\+]+(\d+)")
+% STD_RE = re.compile(r"\-std=[a-z\+]+(\w+)")
 % cc_stds = STD_RE.findall(cc_flags)
 % cxx_stds = STD_RE.findall(cxx_flags)
 %
diff --git a/platformio/ide/tpls/vscode/.vscode/c_cpp_properties.json.tpl b/platformio/ide/tpls/vscode/.vscode/c_cpp_properties.json.tpl
index e6dda8957d..e99957cb4d 100644
--- a/platformio/ide/tpls/vscode/.vscode/c_cpp_properties.json.tpl
+++ b/platformio/ide/tpls/vscode/.vscode/c_cpp_properties.json.tpl
@@ -6,6 +6,14 @@
 %
 % systype = platform.system().lower()
 %
+% cpp_standards_remap = {
+%   "0x": "11",
+%   "1y": "14",
+%   "1z": "17",
+%   "2a": "20",
+%   "2b": "23"
+% }
+%
 % def _escape(text):
 %   return to_unix_path(text).replace('"', '\\"')
 % end
@@ -68,7 +76,7 @@
 %
 % cleaned_includes = filter_includes(includes, ["toolchain"])
 %
-% STD_RE = re.compile(r"\-std=[a-z\+]+(\d+)")
+% STD_RE = re.compile(r"\-std=[a-z\+]+(\w+)")
 % cc_stds = STD_RE.findall(cc_flags)
 % cxx_stds = STD_RE.findall(cxx_flags)
 % cc_m_flags = split_args(cc_flags)
@@ -115,7 +123,7 @@
             "cStandard": "c{{ cc_stds[-1] }}",
 % end
 % if cxx_stds:
-            "cppStandard": "c++{{ cxx_stds[-1] }}",
+            "cppStandard": "c++{{ cpp_standards_remap.get(cxx_stds[-1], cxx_stds[-1]) }}",
 % end
 % if forced_includes:
             "forcedInclude": [