diff --git a/compiler/rustc_target/src/spec/mod.rs b/compiler/rustc_target/src/spec/mod.rs
index 771aec4de7b17..9b0fedba0923f 100644
--- a/compiler/rustc_target/src/spec/mod.rs
+++ b/compiler/rustc_target/src/spec/mod.rs
@@ -1587,7 +1587,6 @@ supported_targets! {
     ("armv7r-none-eabihf", armv7r_none_eabihf),
 
     ("x86_64-pc-solaris", x86_64_pc_solaris),
-    ("x86_64-sun-solaris", x86_64_sun_solaris),
     ("sparcv9-sun-solaris", sparcv9_sun_solaris),
 
     ("x86_64-unknown-illumos", x86_64_unknown_illumos),
diff --git a/src/ci/docker/host-x86_64/dist-various-2/Dockerfile b/src/ci/docker/host-x86_64/dist-various-2/Dockerfile
index 01b46118b9c1e..3f4e025111ade 100644
--- a/src/ci/docker/host-x86_64/dist-various-2/Dockerfile
+++ b/src/ci/docker/host-x86_64/dist-various-2/Dockerfile
@@ -48,9 +48,6 @@ ENV \
     AR_x86_64_pc_solaris=x86_64-pc-solaris2.10-ar \
     CC_x86_64_pc_solaris=x86_64-pc-solaris2.10-gcc \
     CXX_x86_64_pc_solaris=x86_64-pc-solaris2.10-g++ \
-    AR_x86_64_sun_solaris=x86_64-sun-solaris2.10-ar \
-    CC_x86_64_sun_solaris=x86_64-sun-solaris2.10-gcc \
-    CXX_x86_64_sun_solaris=x86_64-sun-solaris2.10-g++ \
     CC_armv7_unknown_linux_gnueabi=arm-linux-gnueabi-gcc-9 \
     CXX_armv7_unknown_linux_gnueabi=arm-linux-gnueabi-g++-9 \
     AR_x86_64_fortanix_unknown_sgx=ar \
@@ -84,8 +81,6 @@ COPY host-x86_64/dist-various-2/build-fuchsia-toolchain.sh /tmp/
 RUN /tmp/build-fuchsia-toolchain.sh
 COPY host-x86_64/dist-various-2/build-solaris-toolchain.sh /tmp/
 RUN /tmp/build-solaris-toolchain.sh x86_64  amd64   solaris-i386  pc
-# Build deprecated target 'x86_64-sun-solaris2.10' until removed
-RUN /tmp/build-solaris-toolchain.sh x86_64  amd64   solaris-i386  sun
 RUN /tmp/build-solaris-toolchain.sh sparcv9 sparcv9 solaris-sparc sun
 COPY host-x86_64/dist-various-2/build-x86_64-fortanix-unknown-sgx-toolchain.sh /tmp/
 RUN /tmp/build-x86_64-fortanix-unknown-sgx-toolchain.sh
@@ -120,7 +115,6 @@ ENV TARGETS=$TARGETS,wasm32-wasi
 ENV TARGETS=$TARGETS,wasm32-wasi-preview1-threads
 ENV TARGETS=$TARGETS,sparcv9-sun-solaris
 ENV TARGETS=$TARGETS,x86_64-pc-solaris
-ENV TARGETS=$TARGETS,x86_64-sun-solaris
 ENV TARGETS=$TARGETS,x86_64-unknown-linux-gnux32
 ENV TARGETS=$TARGETS,x86_64-fortanix-unknown-sgx
 ENV TARGETS=$TARGETS,nvptx64-nvidia-cuda
diff --git a/src/doc/rustc/src/platform-support.md b/src/doc/rustc/src/platform-support.md
index d7266c0f56e0e..3671fdd3fd2be 100644
--- a/src/doc/rustc/src/platform-support.md
+++ b/src/doc/rustc/src/platform-support.md
@@ -165,7 +165,7 @@ target | std | notes
 `riscv64gc-unknown-none-elf` | * | Bare RISC-V (RV64IMAFDC ISA)
 `riscv64imac-unknown-none-elf` | * | Bare RISC-V (RV64IMAC ISA)
 `sparc64-unknown-linux-gnu` | ✓ | SPARC Linux (kernel 4.4, glibc 2.23)
-`sparcv9-sun-solaris` | ✓ | SPARC Solaris 10/11, illumos
+`sparcv9-sun-solaris` | ✓ | SPARC Solaris 11, illumos
 `thumbv6m-none-eabi` | * | Bare ARMv6-M
 `thumbv7em-none-eabi` | * | Bare ARMv7E-M
 `thumbv7em-none-eabihf` | * | Bare ARMV7E-M, hardfloat
@@ -184,7 +184,7 @@ target | std | notes
 `x86_64-fuchsia` | ✓ | Alias for `x86_64-unknown-fuchsia`
 [`x86_64-unknown-fuchsia`](platform-support/fuchsia.md) | ✓ | 64-bit x86 Fuchsia
 [`x86_64-linux-android`](platform-support/android.md) | ✓ | 64-bit x86 Android
-`x86_64-pc-solaris` | ✓ | 64-bit Solaris 10/11, illumos
+`x86_64-pc-solaris` | ✓ | 64-bit Solaris 11, illumos
 `x86_64-unknown-linux-gnux32` | ✓ | 64-bit Linux (x32 ABI) (kernel 4.15, glibc 2.27)
 [`x86_64-unknown-none`](platform-support/x86_64-unknown-none.md) | * | Freestanding/bare-metal x86_64, softfloat
 `x86_64-unknown-redox` | ✓ | Redox OS
@@ -342,7 +342,6 @@ target | std | host | notes
 [`x86_64-pc-nto-qnx710`](platform-support/nto-qnx.md) | ✓ |  | x86 64-bit QNX Neutrino 7.1 RTOS |
 [`x86_64-pc-windows-gnullvm`](platform-support/pc-windows-gnullvm.md) | ✓ | ✓ |
 `x86_64-pc-windows-msvc` | * |  | 64-bit Windows XP support
-`x86_64-sun-solaris` | ? |  | Deprecated target for 64-bit Solaris 10/11, illumos
 [`x86_64-unikraft-linux-musl`](platform-support/unikraft-linux-musl.md) | ✓ |   | 64-bit Unikraft with musl
 `x86_64-unknown-dragonfly` | ✓ | ✓ | 64-bit DragonFlyBSD
 `x86_64-unknown-haiku` | ✓ | ✓ | 64-bit Haiku
diff --git a/src/tools/build-manifest/src/main.rs b/src/tools/build-manifest/src/main.rs
index 215ffc771f3da..83c7ccc9edeb7 100644
--- a/src/tools/build-manifest/src/main.rs
+++ b/src/tools/build-manifest/src/main.rs
@@ -151,7 +151,6 @@ static TARGETS: &[&str] = &[
     "x86_64-linux-android",
     "x86_64-pc-windows-gnu",
     "x86_64-pc-windows-msvc",
-    "x86_64-sun-solaris",
     "x86_64-pc-solaris",
     "x86_64-unikraft-linux-musl",
     "x86_64-unknown-freebsd",
diff --git a/tests/assembly/stack-protector/stack-protector-target-support.rs b/tests/assembly/stack-protector/stack-protector-target-support.rs
index c6528ac7c8d16..6d87fd1912b09 100644
--- a/tests/assembly/stack-protector/stack-protector-target-support.rs
+++ b/tests/assembly/stack-protector/stack-protector-target-support.rs
@@ -161,7 +161,7 @@
 // [r77] needs-llvm-components: x86
 // [r78] compile-flags:--target x86_64-linux-android
 // [r78] needs-llvm-components: x86
-// [r79] compile-flags:--target x86_64-sun-solaris
+// [r79] compile-flags:--target x86_64-pc-solaris
 // [r79] needs-llvm-components: x86
 // [r80] compile-flags:--target x86_64-unknown-freebsd
 // [r80] needs-llvm-components: x86