diff --git a/README.md b/README.md
index e9d03119..5027547d 100644
--- a/README.md
+++ b/README.md
@@ -373,7 +373,7 @@ where the names have been abbreviated to fit the layout in GitHub.
 |                      | 0-uf  | 1-sf  | 2-vf  | 3-fr  | 4-f   | 5-m   | 6-s   | 7-sr  | 8-vs  | 9-p   |
 | -------------------- | ----- | ----- | ----- | ----- | ----- | ----- | ----- | ----- | ----- | ----- |
 | rd                   | 0     | 0     | 0     | 0     | 0     | 0     | 1     | 2     | 2     | 2     |
-| pu-depth-intra       | 2-3   | 2-3   | 2-3   | 2-3   | 1-3   | 1-3   | 1-3   | 1-3   | 1-3   | 1-3   |
+| pu-depth-intra       | 2-3   | 2-3   | 2-3   | 2-3   | 1-3   | 1-4   | 1-4   | 1-4   | 1-4   | 1-4   |
 | pu-depth-inter       | 1-2   | 1-2   | 1-3   | 1-3   | 1-3   | 0-3   | 0-3   | 0-3   | 0-3   | 0-3   |
 | me                   | hexbs | hexbs | hexbs | hexbs | hexbs | hexbs | hexbs | hexbs | tz    | tz    |
 | gop                  | 8     | 8     | 8     | 8     | 8     | 16    | 16    | 16    | 16    | 16    |
diff --git a/src/cfg.c b/src/cfg.c
index 129d7fbb..8147bcdb 100644
--- a/src/cfg.c
+++ b/src/cfg.c
@@ -699,7 +699,7 @@ int uvg_config_parse(uvg_config *cfg, const char *name, const char *value)
       {
         "medium",
         "rd", "0",
-        "pu-depth-intra", "1-3",
+        "pu-depth-intra", "1-4",
         "pu-depth-inter", "0-3",
         "me", "hexbs",
         "gop", "16",
@@ -725,7 +725,7 @@ int uvg_config_parse(uvg_config *cfg, const char *name, const char *value)
       {
         "slow",
         "rd", "1",
-        "pu-depth-intra", "1-3",
+        "pu-depth-intra", "1-4",
         "pu-depth-inter", "0-3",
         "me", "hexbs",
         "gop", "16",
@@ -751,7 +751,7 @@ int uvg_config_parse(uvg_config *cfg, const char *name, const char *value)
       {
         "slower",
         "rd", "2",
-        "pu-depth-intra", "1-3",
+        "pu-depth-intra", "1-4",
         "pu-depth-inter", "0-3",
         "me", "hexbs",
         "gop", "16",
@@ -777,7 +777,7 @@ int uvg_config_parse(uvg_config *cfg, const char *name, const char *value)
       {
         "veryslow",
         "rd", "2",
-        "pu-depth-intra", "1-3",
+        "pu-depth-intra", "1-4",
         "pu-depth-inter", "0-3",
         "me", "tz",
         "gop", "16",
@@ -803,7 +803,7 @@ int uvg_config_parse(uvg_config *cfg, const char *name, const char *value)
       {
         "placebo",
         "rd", "2",
-        "pu-depth-intra", "1-3",
+        "pu-depth-intra", "1-4",
         "pu-depth-inter", "0-3",
         "me", "tz",
         "gop", "16",
diff --git a/src/global.h b/src/global.h
index 85f26f71..444cdfac 100644
--- a/src/global.h
+++ b/src/global.h
@@ -149,7 +149,7 @@ typedef int16_t mv_t;
 #define PU_DEPTH_INTER_MIN 0
 #define PU_DEPTH_INTER_MAX 3
 #define PU_DEPTH_INTRA_MIN 0
-#define PU_DEPTH_INTRA_MAX 3
+#define PU_DEPTH_INTRA_MAX 4
 
 //! Maximum number of layers in GOP structure (for allocating structures)
 #define MAX_GOP_LAYERS 6
diff --git a/tests/test_intra.sh b/tests/test_intra.sh
index 2f0ca470..3a560002 100755
--- a/tests/test_intra.sh
+++ b/tests/test_intra.sh
@@ -6,7 +6,7 @@ set -eu
 
 . "${0%/*}/util.sh"
 
-common_args='256x128 10 yuv420p -p1 --preset=ultrafast --threads=0 --no-wpp --no-tmvp --no-deblock --sao=0 --pu-depth-intra 0-3'
+common_args='256x128 10 yuv420p -p1 --preset=ultrafast --threads=0 --no-wpp --no-tmvp --no-deblock --sao=0 --pu-depth-intra 0-4'
 valgrind_test $common_args --rd=1
 valgrind_test $common_args --rd=2 --no-transform-skip --qp 37
 valgrind_test $common_args --rd=2 --no-transform-skip --qp 37 --signhide --rdoq 
diff --git a/tests/test_lmcs.sh b/tests/test_lmcs.sh
index 391fb534..fd3b5dff 100755
--- a/tests/test_lmcs.sh
+++ b/tests/test_lmcs.sh
@@ -6,6 +6,6 @@ set -eu
 
 . "${0%/*}/util.sh"
 
-common_args='256x128 10 yuv420p -p1 --preset=ultrafast --threads=0 --no-wpp --no-tmvp --no-deblock --sao=0 --cpuid=0 --pu-depth-intra 0-3 --lmcs'
+common_args='256x128 10 yuv420p -p1 --preset=ultrafast --threads=0 --no-wpp --no-tmvp --no-deblock --sao=0 --cpuid=0 --pu-depth-intra 0-4 --lmcs'
 valgrind_test $common_args --deblock --sao=full --alf=full
 
diff --git a/tests/test_monochrome.sh b/tests/test_monochrome.sh
index 7d2ffa6f..928228d4 100755
--- a/tests/test_monochrome.sh
+++ b/tests/test_monochrome.sh
@@ -6,7 +6,7 @@ set -eu
 
 . "${0%/*}/util.sh"
 
-common_args='256x128 10 gray --hash none --preset=ultrafast --input-format P400 --threads=0 --no-wpp --no-tmvp --no-deblock --sao=0 --cpuid=0 --pu-depth-intra 0-3'
+common_args='256x128 10 gray --hash none --preset=ultrafast --input-format P400 --threads=0 --no-wpp --no-tmvp --no-deblock --sao=0 --cpuid=0 --pu-depth-intra 0-4'
 valgrind_test $common_args --rd=1 -p1 
 valgrind_test $common_args --rd=2 -p1 
 valgrind_test $common_args --rd=2 -p1 --deblock 0:0