diff --git a/ci/aarch64-linux-debug.sh b/ci/aarch64-linux-debug.sh
index 29c815e8166822c75ddd150199aa1c0c35c09e38..0892840f942ecd5607b0110af62d8870e1b0a376 100755
--- a/ci/aarch64-linux-debug.sh
+++ b/ci/aarch64-linux-debug.sh
@@ -51,7 +51,7 @@ stage3-debug/bin/zig build test docs \
   --search-prefix "$PREFIX" \
   --zig-lib-dir "$PWD/../lib" \
   -Denable-superhtml \
-  --test-timeout 60s
+  --test-timeout 3m
 
 stage3-debug/bin/zig build \
   --prefix stage4-debug \
diff --git a/ci/aarch64-linux-release.sh b/ci/aarch64-linux-release.sh
index 26547d8b41cb3231c41ea7fbc02ba3b26f91b9b9..7b0947d385cad2f6b9723f115d2116be1bc8cb14 100755
--- a/ci/aarch64-linux-release.sh
+++ b/ci/aarch64-linux-release.sh
@@ -51,7 +51,7 @@ stage3-release/bin/zig build test docs \
   --search-prefix "$PREFIX" \
   --zig-lib-dir "$PWD/../lib" \
   -Denable-superhtml \
-  --test-timeout 60s
+  --test-timeout 3m
 
 # Ensure that stage3 and stage4 are byte-for-byte identical.
 stage3-release/bin/zig build \
diff --git a/ci/aarch64-macos-debug.sh b/ci/aarch64-macos-debug.sh
index 4afff422694726a52c07bbb22540c385ebe18b4f..93cb68296cdb059a3681d08ea3140f7a8df1209a 100755
--- a/ci/aarch64-macos-debug.sh
+++ b/ci/aarch64-macos-debug.sh
@@ -47,4 +47,4 @@ stage3-debug/bin/zig build test docs \
   -Dstatic-llvm \
   -Dskip-non-native \
   --search-prefix "$PREFIX" \
-  --test-timeout 60s
+  --test-timeout 2m
diff --git a/ci/aarch64-macos-release.sh b/ci/aarch64-macos-release.sh
index 8ddbe9773d4b804859ed7f1340861e17aec9cb60..5a2f3442041f9874cc09b561f0fb832226048c3b 100755
--- a/ci/aarch64-macos-release.sh
+++ b/ci/aarch64-macos-release.sh
@@ -47,7 +47,7 @@ stage3-release/bin/zig build test docs \
   -Dstatic-llvm \
   -Dskip-non-native \
   --search-prefix "$PREFIX" \
-  --test-timeout 60s
+  --test-timeout 2m
 
 # Ensure that stage3 and stage4 are byte-for-byte identical.
 stage3-release/bin/zig build \
diff --git a/ci/aarch64-windows.ps1 b/ci/aarch64-windows.ps1
index 8720c7004d93e0b1388f12307270f2c366a4ba66..610f94a64f8a89ceec658983d476be66eaa90538 100644
--- a/ci/aarch64-windows.ps1
+++ b/ci/aarch64-windows.ps1
@@ -59,7 +59,7 @@ Write-Output "Main test suite..."
   -Dstatic-llvm `
   -Dskip-non-native `
   -Denable-symlinks-windows `
-  --test-timeout 60s
+  --test-timeout 30m
 CheckLastExitCode
 
 # Ensure that stage3 and stage4 are byte-for-byte identical.
diff --git a/ci/loongarch64-linux-debug.sh b/ci/loongarch64-linux-debug.sh
index a2f1126f4f5459f7cbd0cbdecae8b25c03cb8a6a..9757542cbb4b98d749ce0e4dd5fa28943f41951b 100755
--- a/ci/loongarch64-linux-debug.sh
+++ b/ci/loongarch64-linux-debug.sh
@@ -51,7 +51,7 @@ stage3-debug/bin/zig build test docs \
   -Dtarget=native-native-musl \
   --search-prefix "$PREFIX" \
   --zig-lib-dir "$PWD/../lib" \
-  --test-timeout 2m
+  --test-timeout 4m
 
 stage3-debug/bin/zig build \
   --prefix stage4-debug \
diff --git a/ci/loongarch64-linux-release.sh b/ci/loongarch64-linux-release.sh
index 2cb6229d9b3d5adf7fd77605e8fb0b0b5758d018..edb46d8565beec9bfc17e1ccfbc7a0475c653418 100755
--- a/ci/loongarch64-linux-release.sh
+++ b/ci/loongarch64-linux-release.sh
@@ -51,7 +51,7 @@ stage3-release/bin/zig build test docs \
   -Dtarget=native-native-musl \
   --search-prefix "$PREFIX" \
   --zig-lib-dir "$PWD/../lib" \
-  --test-timeout 2m
+  --test-timeout 4m
 
 # Ensure that stage3 and stage4 are byte-for-byte identical.
 stage3-release/bin/zig build \
diff --git a/ci/riscv64-linux-debug.sh b/ci/riscv64-linux-debug.sh
index 84a82be8dc73ac3ac4a450ea0f2429fad9bbb0d1..51e038b369d37caea42c1736b5a71178d1376a5c 100755
--- a/ci/riscv64-linux-debug.sh
+++ b/ci/riscv64-linux-debug.sh
@@ -52,4 +52,4 @@ stage3-debug/bin/zig build test-cases test-modules test-unit test-c-abi test-sta
   -Dtarget=native-native-musl \
   --search-prefix "$PREFIX" \
   --zig-lib-dir "$PWD/../lib" \
-  --test-timeout 2m
+  --test-timeout 4m
diff --git a/ci/riscv64-linux-release.sh b/ci/riscv64-linux-release.sh
index 1aa31a6f8a811016058355c813c7d6a79e220463..1de0335f42ec9be5fa848d4372811f486b37d107 100755
--- a/ci/riscv64-linux-release.sh
+++ b/ci/riscv64-linux-release.sh
@@ -52,4 +52,4 @@ stage3-release/bin/zig build test-cases test-modules test-unit test-c-abi test-s
   -Dtarget=native-native-musl \
   --search-prefix "$PREFIX" \
   --zig-lib-dir "$PWD/../lib" \
-  --test-timeout 2m
+  --test-timeout 4m
diff --git a/ci/x86_64-freebsd-debug.sh b/ci/x86_64-freebsd-debug.sh
index 9440af5e029a3c20a24462715c3f684c402823d8..2c8071dfc1b5d903dc29478f56769ba068eee00c 100755
--- a/ci/x86_64-freebsd-debug.sh
+++ b/ci/x86_64-freebsd-debug.sh
@@ -52,7 +52,7 @@ stage3-debug/bin/zig build test docs \
   -Dskip-macos \
   --search-prefix "$PREFIX" \
   --zig-lib-dir "$PWD/../lib" \
-  --test-timeout 60s
+  --test-timeout 2m
 
 stage3-debug/bin/zig build \
   --prefix stage4-debug \
diff --git a/ci/x86_64-freebsd-release.sh b/ci/x86_64-freebsd-release.sh
index 7f67e757ba5198d6a76c92824c45c376e07cef47..9e0439a33e9de586ce863658d508f9971212f29c 100755
--- a/ci/x86_64-freebsd-release.sh
+++ b/ci/x86_64-freebsd-release.sh
@@ -52,7 +52,7 @@ stage3-release/bin/zig build test docs \
   -Dskip-macos \
   --search-prefix "$PREFIX" \
   --zig-lib-dir "$PWD/../lib" \
-  --test-timeout 60s
+  --test-timeout 2m
 
 # Ensure that stage3 and stage4 are byte-for-byte identical.
 stage3-release/bin/zig build \
diff --git a/ci/x86_64-linux-debug-llvm.sh b/ci/x86_64-linux-debug-llvm.sh
index fc6415afdd5b1530e1246109d179ceca72bd0147..b3b1278192d065f4047fd2b507242689808cdae5 100755
--- a/ci/x86_64-linux-debug-llvm.sh
+++ b/ci/x86_64-linux-debug-llvm.sh
@@ -62,4 +62,4 @@ stage3-debug/bin/zig build test docs \
   --search-prefix "$PREFIX" \
   --zig-lib-dir "$PWD/../lib" \
   -Denable-superhtml \
-  --test-timeout 6m
+  --test-timeout 12m
diff --git a/ci/x86_64-linux-debug.sh b/ci/x86_64-linux-debug.sh
index c9693bc1a7b67c67fab5d25d459737acce1d0d9d..868728367a144c03af76620be6b9bdc6e08db174 100755
--- a/ci/x86_64-linux-debug.sh
+++ b/ci/x86_64-linux-debug.sh
@@ -62,4 +62,4 @@ stage3-debug/bin/zig build test docs \
   --search-prefix "$PREFIX" \
   --zig-lib-dir "$PWD/../lib" \
   -Denable-superhtml \
-  --test-timeout 4m
+  --test-timeout 10m
diff --git a/ci/x86_64-linux-release.sh b/ci/x86_64-linux-release.sh
index 2c2a50c676338d578224da8c29ffba7a71e0bb22..78dad0cc1f5c7bc1e8d1b24a9cc5e39a182d86dc 100755
--- a/ci/x86_64-linux-release.sh
+++ b/ci/x86_64-linux-release.sh
@@ -64,7 +64,7 @@ stage3-release/bin/zig build test docs \
   --search-prefix "$PREFIX" \
   --zig-lib-dir "$PWD/../lib" \
   -Denable-superhtml \
-  --test-timeout 6m
+  --test-timeout 12m
 
 # Ensure that stage3 and stage4 are byte-for-byte identical.
 stage3-release/bin/zig build \