diff --git a/invokeai/backend/install/legacy_arg_parsing.py b/invokeai/backend/install/legacy_arg_parsing.py
index 85ca588fe2..b4f3ab1186 100644
--- a/invokeai/backend/install/legacy_arg_parsing.py
+++ b/invokeai/backend/install/legacy_arg_parsing.py
@@ -9,6 +9,7 @@ SAMPLER_CHOICES = [
     "ddpm",
     "deis",
     "lms",
+    "lms_k",
     "pndm",
     "heun",
     "heun_k",
@@ -18,6 +19,7 @@ SAMPLER_CHOICES = [
     "kdpm_2",
     "kdpm_2_a",
     "dpmpp_2s",
+    "dpmpp_2s_k",
     "dpmpp_2m",
     "dpmpp_2m_k",
     "unipc",
diff --git a/invokeai/backend/stable_diffusion/schedulers/schedulers.py b/invokeai/backend/stable_diffusion/schedulers/schedulers.py
index 08f85cf559..d8da143962 100644
--- a/invokeai/backend/stable_diffusion/schedulers/schedulers.py
+++ b/invokeai/backend/stable_diffusion/schedulers/schedulers.py
@@ -7,7 +7,8 @@ SCHEDULER_MAP = dict(
     ddim=(DDIMScheduler, dict()),
     ddpm=(DDPMScheduler, dict()),
     deis=(DEISMultistepScheduler, dict()),
-    lms=(LMSDiscreteScheduler, dict()),
+    lms=(LMSDiscreteScheduler, dict(use_karras_sigmas=False)),
+    lms_k=(LMSDiscreteScheduler, dict(use_karras_sigmas=True)),
     pndm=(PNDMScheduler, dict()),
     heun=(HeunDiscreteScheduler, dict(use_karras_sigmas=False)),
     heun_k=(HeunDiscreteScheduler, dict(use_karras_sigmas=True)),
@@ -16,7 +17,8 @@ SCHEDULER_MAP = dict(
     euler_a=(EulerAncestralDiscreteScheduler, dict()),
     kdpm_2=(KDPM2DiscreteScheduler, dict()),
     kdpm_2_a=(KDPM2AncestralDiscreteScheduler, dict()),
-    dpmpp_2s=(DPMSolverSinglestepScheduler, dict()),
+    dpmpp_2s=(DPMSolverSinglestepScheduler, dict(use_karras_sigmas=False)),
+    dpmpp_2s_k=(DPMSolverSinglestepScheduler, dict(use_karras_sigmas=True)),
     dpmpp_2m=(DPMSolverMultistepScheduler, dict(use_karras_sigmas=False)),
     dpmpp_2m_k=(DPMSolverMultistepScheduler, dict(use_karras_sigmas=True)),
     unipc=(UniPCMultistepScheduler, dict(cpu_only=True))
diff --git a/invokeai/backend/web/modules/parameters.py b/invokeai/backend/web/modules/parameters.py
index 9a4bc0aec3..9b00093a44 100644
--- a/invokeai/backend/web/modules/parameters.py
+++ b/invokeai/backend/web/modules/parameters.py
@@ -7,6 +7,7 @@ SAMPLER_CHOICES = [
     "ddpm",
     "deis",
     "lms",
+    "lms_k",
     "pndm",
     "heun",
     'heun_k',
@@ -16,6 +17,7 @@ SAMPLER_CHOICES = [
     "kdpm_2",
     "kdpm_2_a",
     "dpmpp_2s",
+    "dpmpp_2s_k",
     "dpmpp_2m",
     "dpmpp_2m_k",
     "unipc",
diff --git a/invokeai/frontend/web/src/app/constants.ts b/invokeai/frontend/web/src/app/constants.ts
index c2e525ad7d..3506bafac2 100644
--- a/invokeai/frontend/web/src/app/constants.ts
+++ b/invokeai/frontend/web/src/app/constants.ts
@@ -3,10 +3,12 @@
 export const SCHEDULERS = [
   'ddim',
   'lms',
+  'lms_k',
   'euler',
   'euler_k',
   'euler_a',
   'dpmpp_2s',
+  'dpmpp_2s_k',
   'dpmpp_2m',
   'dpmpp_2m_k',
   'kdpm_2',
diff --git a/invokeai/frontend/web/src/services/api/models/InpaintInvocation.ts b/invokeai/frontend/web/src/services/api/models/InpaintInvocation.ts
index e4ca53a5c2..247af1a31d 100644
--- a/invokeai/frontend/web/src/services/api/models/InpaintInvocation.ts
+++ b/invokeai/frontend/web/src/services/api/models/InpaintInvocation.ts
@@ -45,7 +45,7 @@ export type InpaintInvocation = {
   /**
    * The scheduler to use
    */
-  scheduler?: 'ddim' | 'ddpm' | 'deis' | 'lms' | 'pndm' | 'heun' | 'heun_k' | 'euler' | 'euler_k' | 'euler_a' | 'kdpm_2' | 'kdpm_2_a' | 'dpmpp_2s' | 'dpmpp_2m' | 'dpmpp_2m_k' | 'unipc';
+  scheduler?: 'ddim' | 'ddpm' | 'deis' | 'lms' | 'lms_k' | 'pndm' | 'heun' | 'heun_k' | 'euler' | 'euler_k' | 'euler_a' | 'kdpm_2' | 'kdpm_2_a' | 'dpmpp_2s' | 'dpmpp_2s_k' | 'dpmpp_2m' | 'dpmpp_2m_k' | 'unipc';
   /**
    * The model to use (currently ignored)
    */
diff --git a/invokeai/frontend/web/src/services/api/models/LatentsToLatentsInvocation.ts b/invokeai/frontend/web/src/services/api/models/LatentsToLatentsInvocation.ts
index 03d8fec491..bd58e3d960 100644
--- a/invokeai/frontend/web/src/services/api/models/LatentsToLatentsInvocation.ts
+++ b/invokeai/frontend/web/src/services/api/models/LatentsToLatentsInvocation.ts
@@ -43,7 +43,7 @@ export type LatentsToLatentsInvocation = {
   /**
    * The scheduler to use
    */
-  scheduler?: 'ddim' | 'ddpm' | 'deis' | 'lms' | 'pndm' | 'heun' | 'heun_k' | 'euler' | 'euler_k' | 'euler_a' | 'kdpm_2' | 'kdpm_2_a' | 'dpmpp_2s' | 'dpmpp_2m' | 'dpmpp_2m_k' | 'unipc';
+  scheduler?: 'ddim' | 'ddpm' | 'deis' | 'lms' | 'lms_k' | 'pndm' | 'heun' | 'heun_k' | 'euler' | 'euler_k' | 'euler_a' | 'kdpm_2' | 'kdpm_2_a' | 'dpmpp_2s' | 'dpmpp_2s_k' | 'dpmpp_2m' | 'dpmpp_2m_k' | 'unipc';
   /**
    * UNet submodel
    */
diff --git a/invokeai/frontend/web/src/services/api/models/TextToLatentsInvocation.ts b/invokeai/frontend/web/src/services/api/models/TextToLatentsInvocation.ts
index 5162d8e9ae..676aab915e 100644
--- a/invokeai/frontend/web/src/services/api/models/TextToLatentsInvocation.ts
+++ b/invokeai/frontend/web/src/services/api/models/TextToLatentsInvocation.ts
@@ -43,7 +43,7 @@ export type TextToLatentsInvocation = {
   /**
    * The scheduler to use
    */
-  scheduler?: 'ddim' | 'ddpm' | 'deis' | 'lms' | 'pndm' | 'heun' | 'heun_k' | 'euler' | 'euler_k' | 'euler_a' | 'kdpm_2' | 'kdpm_2_a' | 'dpmpp_2s' | 'dpmpp_2m' | 'dpmpp_2m_k' | 'unipc';
+  scheduler?: 'ddim' | 'ddpm' | 'deis' | 'lms' | 'lms_k' | 'pndm' | 'heun' | 'heun_k' | 'euler' | 'euler_k' | 'euler_a' | 'kdpm_2' | 'kdpm_2_a' | 'dpmpp_2s' | 'dpmpp_2s_k' | 'dpmpp_2m' | 'dpmpp_2m_k' | 'unipc';
   /**
    * UNet submodel
    */