diff --git a/mingw-w64-crt/Makefile.am b/mingw-w64-crt/Makefile.am
index 7b2fcba..433c298 100644
--- a/mingw-w64-crt/Makefile.am
+++ b/mingw-w64-crt/Makefile.am
@@ -2600,6 +2600,7 @@
 		%/libapi-ms-win-security-credentials-l1-1-0.a \
 		%/libapi-ms-win-security-cryptoapi-l1-1-0.a \
 		%/libapi-ms-win-security-isolatedcontainer-l1-1-0.a \
+		%/libapi-ms-win-security-isolatedcontainer-l1-1-1.a \
 		%/libapi-ms-win-security-lsalookup-ansi-l2-1-0.a \
 		%/libapi-ms-win-security-lsalookup-l2-1-0.a \
 		%/libapi-ms-win-security-lsalookup-l2-1-1.a \
diff --git a/mingw-w64-crt/lib-common/api-ms-win-security-isolatedcontainer-l1-1-1.def b/mingw-w64-crt/lib-common/api-ms-win-security-isolatedcontainer-l1-1-1.def
new file mode 100644
index 0000000..c54c65d
--- /dev/null
+++ b/mingw-w64-crt/lib-common/api-ms-win-security-isolatedcontainer-l1-1-1.def
@@ -0,0 +1,5 @@
+LIBRARY api-ms-win-security-isolatedcontainer-l1-1-1
+
+EXPORTS
+
+IsProcessInWDAGContainer
diff --git a/mingw-w64-crt/lib-common/onecore_apiset.mri b/mingw-w64-crt/lib-common/onecore_apiset.mri
index 5057b2e..fb5a73f 100644
--- a/mingw-w64-crt/lib-common/onecore_apiset.mri
+++ b/mingw-w64-crt/lib-common/onecore_apiset.mri
@@ -222,7 +222,7 @@
 ADDLIB libapi-ms-win-security-credentials-l1-1-0.a
 ADDLIB libapi-ms-win-security-cryptoapi-l1-1-0.a
 ADDLIB libapi-ms-win-security-isolatedcontainer-l1-1-0.a
-; FIXME libapi-ms-win-security-isolatedcontainer-l1-1-1.a
+ADDLIB libapi-ms-win-security-isolatedcontainer-l1-1-1.a
 ADDLIB libapi-ms-win-security-lsalookup-ansi-l2-1-0.a
 ADDLIB libapi-ms-win-security-lsalookup-l2-1-0.a
 ADDLIB libapi-ms-win-security-lsalookup-l2-1-1.a
diff --git a/mingw-w64-crt/lib32/api-ms-win-security-isolatedcontainer-l1-1-1.def b/mingw-w64-crt/lib32/api-ms-win-security-isolatedcontainer-l1-1-1.def
new file mode 100644
index 0000000..9f1cc87
--- /dev/null
+++ b/mingw-w64-crt/lib32/api-ms-win-security-isolatedcontainer-l1-1-1.def
@@ -0,0 +1,5 @@
+LIBRARY api-ms-win-security-isolatedcontainer-l1-1-1
+
+EXPORTS
+
+IsProcessInWDAGContainer@8